TWI806422B - Highly anti-corrosion layered structure and manufacturing method thereof - Google Patents

Abstract

According to the present disclosure, a manufacturing method of a highly anti-corrosion layered structure includes steps as follows: an original substrate is provided, a preprocessing step is performed, a nickel pre-plating step is performed and a nickel electroless-plating step is performed. In the preprocessing step, the original substrate is preprocessed to obtain a substrate. In the nickel pre-plating step, the substrate is in contact with a first nickel-containing solution, and a current is applied thereto to obtain a pre-plating structure. In the nickel electroless-plating step, the pre-plating structure is in contact with a second nickel-containing solution and heated. The anti-corrosion protecting layer is formed on a surface of the pre-plating structure, so as to obtain the highly anti-corrosion layered structure. Therefore, by adjusting the ratio of nickel and phosphorus in the second nickel-containing solution, the protection from the anti-corrosion protecting layer can be stronger, and the corrosion resistance of the highly anti-corrosion layered structure in strong acidic environment with relatively high temperature can be enhanced.

Description

High corrosion resistance layered structure and preparation method thereof

The invention relates to a corrosion-resistant layered structure and a preparation method thereof, in particular to a high-corrosion-resistant layered structure with excellent corrosion resistance and a preparation method thereof.

Existing technologies for metal surface treatment are mainly divided into electroplating and electroless plating. Electroplating is to use the principle of electrolysis to plate a thin layer of other metals or alloys on the surface of metal components, so as to improve the wear resistance, conductivity, corrosion resistance and aesthetics of the surface of metal components. However, electroplating is prone to uneven thickness and defects due to factors such as different conductivity properties or complex shapes of components. The electroplating process consumes a lot of electricity and generates a lot of waste water, which in turn results in a lot of environmental protection costs.

Electroless plating uses the principle of self-catalysis, so that the components to be plated in the plating solution are chemically deposited on the surface of the component to form a coating. The coating formed by electroless plating is denser and more uniform in thickness, and the electroless plating process is harmful to the environment. It is more friendly, so it has gradually become one of the important surface treatment technologies. However, the corrosion resistance of conventional electroless plating products is still insufficient. If they are exposed to a medium-high temperature strong acid environment for a long time, obvious corrosion may still occur.

In view of this, the preparation of an electroless plating product with excellent corrosion resistance is still the goal of the related industry.

In order to achieve the above object, the object of the present invention is to provide a high corrosion-resistant layered structure and a preparation method thereof, wherein the reaction solution used in the preparation of the high corrosion-resistant layered structure has a nickel-phosphorus composition in a specific ratio, which can greatly increase High corrosion resistance Corrosion resistance of layered structures.

One embodiment of one aspect of the present invention provides a method for preparing a highly corrosion-resistant layered structure, which includes the following steps: providing an original substrate, performing a pretreatment step, performing a pre-nickel plating step, and performing an electroless nickel plating step . In the pretreatment step, the original substrate is pretreated to obtain a substrate. In the pre-nickel-plating step, the substrate is contacted with a first nickel-containing solution, and the substrate is energized, and the nickel element in the first nickel-containing solution is electroplated to the substrate to obtain a pre-plating structure. In the electroless nickel plating step, the pre-plating structure is contacted with a second nickel-containing solution, and the pre-plating structure and the second nickel-containing solution are heated, so that a corrosion-resistant protective layer is formed on one surface of the pre-plating structure to obtain High corrosion resistance layered structure. Wherein, the second nickel-containing solution includes a phosphorus-containing mixture and a nickel-containing mixture, the volume ratio of the phosphorus-containing mixture to the nickel-containing mixture is 4:1˜1.5:1, and the material of the corrosion-resistant protective layer includes nickel and phosphorus.

Accordingly, the preparation method of the high corrosion-resistant layered structure of the present invention adjusts the ratio of the phosphorus-containing mixture and the nickel-containing mixture in the nickel-containing solution, so that the formed corrosion-resistant protective layer has better protection, and can effectively protect the substrate from being damaged. Corrosion, and then improve the corrosion resistance of the high corrosion resistance layered structure in the medium and high temperature strong acid environment.

According to the aforementioned method for preparing a high corrosion-resistant layered structure, the material of the original substrate may include an iron-containing alloy.

According to the aforementioned method for preparing a layered structure with high corrosion resistance, the material of the original base material can be a stainless steel material.

According to the aforementioned method for preparing a layered structure with high corrosion resistance, the pretreatment step may include the following steps: performing a degreasing step and performing a pickling step. In the degreasing step, the original substrate may be heated and/or energized to remove oil stains on the original substrate to obtain a degreased substrate. In the pickling step, the degreasing substrate may be washed with an acidic solution to remove oxides on the degreasing substrate to obtain the substrate.

According to the aforementioned method for preparing a highly corrosion-resistant layered structure, the first nickel-containing solution may include a nickel salt, a conductive salt, an acid-base buffer, and a wetting agent.

According to the aforementioned method for preparing a layered structure with high corrosion resistance, the phosphorus-containing mixture may contain hypophosphite, and the proportion of hypophosphite in the phosphorus-containing mixture may be 10 wt% to 35 wt%.

According to the aforementioned method for preparing a highly corrosion-resistant layered structure, the nickel-containing mixture may contain nickel salt, and the proportion of the nickel salt in the nickel-containing mixture may be 10 wt% to 50 wt%.

According to the aforementioned method for preparing a layered structure with high corrosion resistance, in the step of electroless nickel plating, the pre-plating structure and the second nickel-containing solution can be heated to 70°C-95°C and maintained for at least 1 hour to form a corrosion-resistant protective layer .

According to the aforementioned method for preparing a highly corrosion-resistant layered structure, the thickness of the corrosion-resistant protective layer can be 15 μm to 50 μm.

According to the above-mentioned preparation method of the highly corrosion-resistant layered structure, the phosphorus content of the corrosion-resistant protective layer can be 9wt%~13wt%.

According to the above-mentioned preparation method of the high corrosion-resistant layered structure, the material of the corrosion-resistant protective layer can further include fluoride ions, nitrate ions, phosphate ions, sodium ions, potassium ions and magnesium ions, and the content of fluorine ions can be 1×10 ¹² pieces/cm ² to 4×10 ¹³ pieces/cm ² , the content of nitrate ions can be 5×10 ¹² pieces/cm ² to 2×10 ¹⁴ pieces/cm ² , the content of phosphate ions can be 5×10 ¹¹ ions/cm ² to 1.5×10 ¹⁴ pcs/cm ² , the content of sodium ions can be 1×10 ¹² pcs/cm ² to 1.5×10 ¹⁴ pcs/cm ² , the content of potassium ions can be 1×10 ¹² pcs/cm 2 cm ² to 1×10 ¹⁴ /cm ² , and the content of magnesium ions may be 1×10 ¹² /cm ² to 1×10 ¹⁴ /cm ² .

An embodiment of another aspect of the present invention provides a layered structure with high corrosion resistance, which is prepared by the method for preparing the layered structure with high corrosion resistance as described above.

Another embodiment of one aspect of the present invention provides a method for preparing a highly corrosion-resistant layered structure, which includes the following steps: providing an original substrate, performing a pretreatment step, performing a first zinc replacement step, and performing a zinc stripping Steps, performing a second zinc replacement step and performing an electroless nickel plating step. In the pretreatment step, the original substrate is pretreated to obtain a substrate. In the first zinc replacement step, the substrate is contacted with a first zinc-containing solution, and the zinc element in the first zinc-containing solution is attached to the substrate to obtain a first zinc-containing substrate. The stripping step is to remove parts of the first zinc-containing substrate. Zinc elements are separated to obtain a stripped zinc substrate. In the second zinc replacement step, the stripped zinc substrate is contacted with a second zinc-containing solution, and the zinc element in the second zinc-containing solution is attached to the stripped zinc substrate to obtain a second zinc-containing substrate . In the electroless nickel plating step, the second zinc-containing substrate is contacted with a nickel-containing solution, and the second zinc-containing substrate and the nickel-containing solution are heated to form a corrosion-resistant protective layer on the second zinc-containing substrate One surface to obtain a layered structure with high corrosion resistance. Wherein, the nickel-containing solution includes a phosphorus-containing mixture and a nickel-containing mixture, the volume ratio of the phosphorus-containing mixture to the nickel-containing mixture is 4:1-1.5:1, and the material of the corrosion-resistant protective layer includes nickel and phosphorus.

According to the aforementioned method for preparing a layered structure with high corrosion resistance, the material of the original base material can be an aluminum alloy material.

According to the aforementioned method for preparing a layered structure with high corrosion resistance, the pretreatment step may include the following steps: performing a degreasing step and performing a pickling step. In the degreasing step, the original substrate may be heated and/or chemically reacted to remove oil stains on the original substrate to obtain a degreased substrate. In the pickling step, the degreasing substrate may be washed with an acidic solution to remove oxides on the degreasing substrate to obtain the substrate.

According to the aforementioned method for preparing a highly corrosion-resistant layered structure, the phosphorus-containing mixture may include hypophosphite, and the proportion of hypophosphite in the phosphorus-containing mixture may be 10wt%-35wt%.

According to the aforementioned method for preparing a high corrosion-resistant layered structure, the nickel-containing mixture may contain nickel salt, and the proportion of the nickel salt in the nickel-containing mixture may be 10wt%-50wt%.

According to the aforementioned high corrosion resistance layered structure preparation method, wherein in the electroless In the nickel plating step, the second zinc-containing substrate and the nickel-containing solution may be heated to 70° C. to 95° C. and maintained for at least 1 hour, so as to form a corrosion-resistant protective layer.

According to the aforementioned method for preparing a highly corrosion-resistant layered structure, the thickness of the corrosion-resistant protective layer can be 15 μm to 50 μm.

According to the above-mentioned preparation method of the highly corrosion-resistant layered structure, the phosphorus content of the corrosion-resistant protective layer can be 9wt%~13wt%.

According to the above-mentioned preparation method of the high corrosion-resistant layered structure, the material of the corrosion-resistant protective layer can further include fluoride ions, nitrate ions, phosphate ions, sodium ions, potassium ions and magnesium ions, and the content of fluorine ions can be 1×10 ¹² pieces/cm ² to 4×10 ¹³ pieces/cm ² , the content of nitrate ions can be 5×10 ¹² pieces/cm ² to 2×10 ¹⁴ pieces/cm ² , the content of phosphate ions can be 5×10 ¹¹ ions/cm ² to 1.5×10 ¹⁴ pcs/cm ² , the content of sodium ions can be 1×10 ¹² pcs/cm ² to 1.5×10 ¹⁴ pcs/cm ² , the content of potassium ions can be 1×10 ¹² pcs/cm 2 cm ² to 1×10 ¹⁴ /cm ² , and the content of magnesium ions may be 1×10 ¹² /cm ² to 1×10 ¹⁴ /cm ² .

Another embodiment of another aspect of the present invention provides a layered structure with high corrosion resistance, which is prepared by the method for preparing the layered structure with high corrosion resistance as described above.

100,300: Preparation method of layered structure with high corrosion resistance

110,120,121,122,130,140,310,320,330,340,350 ,360:step

200: high corrosion resistance layered structure

210: Pre-plated structure

220: Corrosion-resistant protective layer

In order to make the above and other purposes, features, advantages and embodiments of the present invention more clearly understandable, the accompanying drawings are described as follows: Fig. 1 is a high corrosion-resistant layered structure of an embodiment in an aspect of the present invention A flow chart of the steps of the preparation method; Fig. 2 is a detailed flow chart of the step 120 of the method for preparing the high corrosion-resistant layered structure in Fig. 1; Fig. 3 is a structural schematic diagram of a high-corrosion-resistant layered structure in an embodiment in another aspect of the present invention; Fig. 4 The figure is a step-by-step flowchart of a method for preparing a high-corrosion-resistant layered structure according to another embodiment of the present invention; Figure 5A is a front view of a high-corrosion-resistant layered structure according to an embodiment of the present invention after an acid etching test ; and Fig. 5B is the back view of the highly corrosion-resistant layered structure in Fig. 5A after acid etching test.

Various embodiments of the invention are discussed in more detail below. However, this embodiment may be an application of various inventive concepts, and may be embodied in various specific ranges. The specific embodiments are for illustrative purposes only and do not limit the scope of the disclosure.

Please refer to FIG. 1 . FIG. 1 is a flow chart of steps of a method 100 for preparing a highly corrosion-resistant layered structure according to an embodiment of an aspect of the present invention. The method 100 for preparing a highly corrosion-resistant layered structure includes step 110 , step 120 , step 130 and step 140 .

Step 110 is to provide an original base material. The original base material may be made of a material including any metal or alloy. For example, the material of the original base material may include a ferrous alloy. The material of the original substrate can also be a metal or alloy that already has corrosion resistance, for example, it can be a stainless steel or an aluminum alloy material to improve the overall corrosion resistance of the high corrosion resistance layered structure, but the present invention is not limited thereto.

Step 120 is to perform a pretreatment step. In the pretreatment step, the original substrate is pretreated to obtain a substrate. In detail, in the pretreatment step, the original substrate can be cleaned with organic solvents, inorganic solvents, acidic solvents or alkaline solvents, and spray cleaning, immersion cleaning, ultrasonic cleaning, and steam cleaning can be used. or electrolytic cleaning to remove stains, rust, impurities or mottled and rough structures on the original substrate, so as to improve the success rate of subsequent processing and reduce the possibility of defects in the high corrosion-resistant layered structure possibility.

Please refer to FIG. 2 . FIG. 2 is a detailed flow chart of step 120 of the method 100 for preparing the highly corrosion-resistant layered structure in FIG. 1 . The pretreatment step may include step 121 and step 122. Step 121 is a degreasing step. The original substrate can be heated, energized and/or chemically reacted to remove the oil on the original substrate to obtain a degreased substrate. Step 122 is to perform an pickling step, the degreased substrate may be cleaned with an acidic solution to remove oxides on the degreased substrate to obtain the substrate. The surface of the substrate can be made smoother and cleaner by the degreasing step and the pickling step, but other treatments can be performed in the pretreatment step according to the state of the original substrate, so the present invention is not limited thereto.

Step 130 is to carry out a pre-nickel plating step, which is to contact the substrate with a first nickel-containing solution, and energize the substrate, and wait for the nickel element in the first nickel-containing solution to be electroplated to the substrate to obtain a pre-plating structure , and the first nickel-containing solution may include a nickel salt, a conductive salt, an acid-base buffer, and a wetting agent. Through the pre-nickel plating step, a thin film can be formed on the substrate in advance, which is helpful for subsequent The chemical components in the reaction are attached to the substrate, thereby improving the success rate of subsequent processing and reducing the possibility of defects in the highly corrosion-resistant layered structure.

Step 140 is to carry out an electroless nickel plating step, is to contact the pre-plating structure with a second nickel-containing solution, and heat the pre-plating structure and the second nickel-containing solution, so that a corrosion-resistant protective layer is formed on one surface of the pre-plating structure , to obtain a layered structure with high corrosion resistance. In the electroless nickel plating step, the pre-plating structure and the second nickel-containing solution can be heated to 70° C. to 95° C. and maintained for at least 1 hour to form a corrosion-resistant protective layer, and the thickness of the corrosion-resistant protective layer can be 15 μm to 50 μm. By adjusting the reaction temperature and time of the electroless nickel plating step, it can be ensured that the formed corrosion-resistant protective layer has a compact structure and sufficient thickness to provide a good protective effect.

The second nickel-containing solution used in the electroless nickel plating step includes a phosphorus-containing mixture and a nickel-containing mixture, the volume ratio of the phosphorus-containing mixture to the nickel-containing mixture is 4:1~1.5:1, and the phosphorus-containing mixture may include hypophosphorous acid Salt, the proportion of hypophosphite in the phosphorus-containing mixture can be 10wt%~35wt%, the nickel-containing mixture can contain nickel salt, the proportion of nickel salt in the nickel-containing mixture can be 10wt%~50wt%, and the material of the corrosion-resistant protective layer includes nickel and phosphorus. Since the ratio of nickel and phosphorus in the corrosion-resistant protective layer is related to the properties of the corrosion-resistant protective layer, the formed corrosion-resistant protective layer can have better protection by adjusting the ratio of the phosphorus-containing mixture and the nickel-containing mixture. The phosphorus content of the corrosion-resistant protective layer can be 9wt%~13wt%. When the nickel content in the corrosion-resistant protective layer increases, the corrosion-resistant protective layer will have better conductivity and hardness. When the phosphorus content in the corrosion-resistant protective layer increases, the corrosion-resistant protective layer The protective layer will have better gloss and ductility, so the second nickel-containing solution can be adjusted according to the application field of the high-corrosion-resistant layered structure The proportion of the phosphorus-containing mixture and the nickel-containing mixture in order to form a corrosion-resistant protective layer with different nickel-phosphorus ratios.

The material of the anti-corrosion protective layer can further contain fluoride ions, nitrate ions, phosphate ions, sodium ions, potassium ions and magnesium ions, and the content of fluorine ions can be 1×10 ¹² /cm ² to 4×10 ¹³ /cm 2 cm ² , the content of nitrate ions can be 5×10 ¹² /cm ² to 2×10 ¹⁴ /cm ² , the content of phosphate ions can be 5×10 ¹¹ /cm ² to 1.5×10 ¹⁴ /cm 2 cm ² , the content of sodium ions can be 1×10 ¹² /cm ² to 1.5×10 ¹⁴ /cm ² , and the content of potassium ions can be 1×10 ¹² /cm ² to 1×10 ¹⁴ /cm ² , the content of magnesium ions can be 1×10 ¹² /cm ² to 1×10 ¹⁴ /cm ² . By controlling the content of other ions in the corrosion-resistant protective layer, the corrosion resistance of the corrosion-resistant protective layer can be increased, and the structural strength of the corrosion-resistant protective layer can also be prevented from being affected by too many other ions.

Please refer to FIG. 3 . FIG. 3 is a structural schematic diagram of a highly corrosion-resistant layered structure 200 according to an embodiment of another aspect of the present invention. The high-corrosion-resistant layered structure 200 is prepared by the aforementioned high-corrosion-resistant layered structure preparation method 100, and the high-corrosion-resistant layered structure 200 can include a pre-plating structure 210 and a corrosion-resistant protective layer 220, and the corrosion-resistant protective layer 220 is formed On one surface of the pre-plating structure 210 , the preparation method and related details of the highly corrosion-resistant layered structure 200 have been described in the previous paragraphs, and will not be repeated here.

Please refer to FIG. 4 . FIG. 4 is a flowchart of steps of a method 300 for preparing a highly corrosion-resistant layered structure according to another embodiment of an aspect of the present invention. The method 300 for preparing a highly corrosion-resistant layered structure includes step 310 , step 320 , step 330 , step 340 , step 350 and step 360 .

Step 310 is to provide an original substrate, and step 320 is to perform a pretreatment step. The details of step 310 and step 320 are the same as those of step 110 and step 120 in the previous embodiment, and will not be repeated here.

Step 330 is to perform a first zinc replacement step, which is to contact the substrate with a first zinc-containing solution, and wait for the zinc element in the first zinc-containing solution to adhere to the substrate to obtain a first zinc-containing substrate, The first zinc replacement step can be carried out by hot-dip galvanizing, electroplating, zinc spraying, galvanizing or zinc coating, but the present invention is not limited thereto.

Step 340 is to perform a zinc stripping step, which is used to remove part of the zinc element on the first zinc-containing substrate to obtain a zinc stripped substrate. In the zinc stripping step, the first zinc-containing substrate may be immersed in a strong acid solution such as hydrochloric acid, sulfuric acid or nitric acid, and the strong acid solution reacts with the zinc element on the surface of the first zinc-containing substrate to remove part of the zinc element, or, Part of the zinc element on the surface of the first zinc-containing substrate can be removed by means of physical grinding. Since the zinc layer formed in the first zinc replacement step is relatively rough, the zinc layer can be removed through the zinc stripping step while retaining zinc seeds, which is conducive to the subsequent formation of a denser coating.

Step 350 is to carry out a second zinc replacement step, which is to contact the stripped zinc substrate with a second zinc-containing solution, and wait for the zinc element in the second zinc-containing solution to adhere to the stripped zinc substrate to obtain a second zinc-containing solution. For the zinc substrate, the details of the second zinc replacement step are similar to those of the first zinc replacement step, and will not be repeated here. Through the first zinc replacement step, the zinc stripping step and the second zinc replacement step, a zinc replacement layer with good adhesion and no pinholes or defects can be formed on the substrate, thereby improving the success rate of subsequent reactions.

Step 360 is to carry out an electroless nickel plating step, is the second zinc-containing The substrate is in contact with a nickel-containing solution, and the second zinc-containing substrate and the nickel-containing solution are heated to form a corrosion-resistant protective layer on one surface of the second zinc-containing substrate to obtain a layered structure with high corrosion resistance. The details of step 360 are the same as step 140 of the previous embodiment, and the nickel-containing solution used in step 360 and the high corrosion-resistant layered structure formed are also the same as the second nickel-containing solution used in step 140 and the layered structure formed by it. The formed high-corrosion-resistant layered structure 200 is the same and will not be repeated here.

In the following, an acid etching test will be carried out on the high-corrosion-resistant layered structure of an embodiment of the present invention to understand whether the high-corrosion-resistant layered structure prepared by the method for preparing the high-corrosion-resistant layered structure of the present invention has sufficient corrosion resistance.

<Acid Etch Test>

In this test, the highly corrosion-resistant layered structure of one embodiment of the present invention is placed in a strong acid environment (for example: strong acid solutions such as hydrochloric acid, sulfuric acid or nitric acid), and the pH value of the strong acid environment is -0.7 and the ambient temperature is 50 ℃, after the high-corrosion-resistant layered structure has been in the above-mentioned strong acid environment for 24 hours, the high-corrosion-resistant layered structure is taken out and the corrosion status of the front and back sides is observed.

Please refer to Figure 5A and Figure 5B, Figure 5A is the front view of the high corrosion-resistant layered structure of the embodiment of the present invention after acid etching test, Figure 5B is the high corrosion-resistant layered structure of Figure 5A after acid etching Back view after testing. It can be seen from Fig. 5A and Fig. 5B that the surface of the high-corrosion-resistant layered structure prepared by the method for preparing the high-corrosion-resistant layered structure of the present invention is still intact even if it is placed in a medium-high temperature strong acidic environment for a long time. Pinholes, blisters, or color differences appear, indicating that the corrosion-resistant protective layer in the high-corrosion-resistant layered structure can provide good protection, and the overall corrosion resistance of the high-corrosion-resistant layered structure is equivalent to Excellent, suitable for use in environments with strong acids and high temperatures.

To sum up, the preparation method of the high corrosion-resistant layered structure of the present invention adjusts the ratio of the phosphorus-containing mixture and the nickel-containing mixture in the nickel-containing solution, so that the formed corrosion-resistant protective layer has better protection and can effectively protect the substrate. It is not corroded, thereby improving the corrosion resistance of the high-corrosion-resistant layered structure in a medium-high temperature strong acid environment.

Although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Anyone skilled in this art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be defined by the appended patent application scope.

100: Preparation method of high corrosion resistance layered structure

110, 120, 130, 140: steps

Claims (18)

A method for preparing a layered structure with high corrosion resistance, comprising: providing an original substrate; performing a pretreatment step, which is to pretreat the original substrate to obtain a substrate; performing a pre-nickel plating step, which is to obtain a substrate The material is contacted with a first nickel-containing solution, and the substrate is energized, and the nickel element in the first nickel-containing solution is electroplated to the substrate to obtain a pre-plating structure; and an electroless nickel plating step is performed, which is The pre-plating structure is contacted with a second nickel-containing solution, and the pre-plating structure and the second nickel-containing solution are heated to form a corrosion-resistant protective layer on one surface of the pre-plating structure to obtain the high corrosion-resistant layer structure; wherein, the second nickel-containing solution contains a phosphorus-containing mixture and a nickel-containing mixture, the volume ratio of the phosphorus-containing mixture to the nickel-containing mixture is 4:1~1.5:1, and the phosphorus-containing mixture contains hypophosphorous acid Salt, the proportion of hypophosphite in the phosphorus-containing mixture is 10wt%~35wt%, the nickel-containing mixture contains nickel salt, the proportion of nickel salt in the nickel-containing mixture is 10wt%~50wt%, and the material of the corrosion-resistant protective layer Contains nickel and phosphorus. The method for preparing a highly corrosion-resistant layered structure according to claim 1, wherein the material of the original base material includes an iron-containing alloy. The method for preparing a highly corrosion-resistant layered structure as described in Claim 2, wherein the material of the original base material is a stainless steel material. The method for preparing a highly corrosion-resistant layered structure as described in Claim 1, wherein the pretreatment step includes: performing a degreasing step, which is to heat and/or energize the original substrate to remove the oil on the original substrate, to obtain a degreasing substrate; and performing an pickling step of cleaning the degreasing substrate with an acidic solution to remove oxides on the degreasing substrate to obtain the substrate. The method for preparing a highly corrosion-resistant layered structure according to claim 1, wherein the first nickel-containing solution includes a nickel salt, a conductive salt, an acid-base buffer, and a wetting agent. The method for preparing a highly corrosion-resistant layered structure as described in Claim 1, wherein in the step of electroless nickel plating, the pre-plating structure and the second nickel-containing solution are heated to 70° C. to 95° C. and maintained for at least 1 hour, to form the corrosion-resistant protective layer. The method for preparing a highly corrosion-resistant layered structure as described in claim 1, wherein the thickness of the corrosion-resistant protective layer is 15 μm to 50 μm. The method for preparing a highly corrosion-resistant layered structure as described in Claim 1, wherein the phosphorus content of the corrosion-resistant protective layer is 9wt%~13wt%. The method for preparing a highly corrosion-resistant layered structure as described in claim 1, wherein the material of the corrosion-resistant protective layer further includes fluoride ions, nitrate ions, phosphate ions, sodium ions, potassium ions and magnesium ions, and the content of the fluoride ions is 1×10 ¹² /cm ² to 4×10 ¹³ /cm ² , the content of the nitrate ion is 5×10 ¹² /cm ² to 2×10 ¹⁴ /cm ² , the content of the phosphate ion is 5×10 ¹¹ /cm ² to 1.5×10 ¹⁴ /cm ² , the sodium ion content is 1×10 ¹² /cm ² to 1.5×10 ¹⁴ /cm ² , the potassium ion content is 1× 10 ¹² /cm ² to 1×10 ¹⁴ /cm ² , and the magnesium ion content is 1×10 ¹² /cm ² to 1×10 ¹⁴ /cm ² . A layered structure with high corrosion resistance, which is prepared by the method for preparing a layered structure with high corrosion resistance according to any one of claim 1 to claim 9. A method for preparing a layered structure with high corrosion resistance, comprising: providing an original substrate; performing a pretreatment step, which is to pretreat the original substrate to obtain a substrate; performing a first zinc replacement step, which is to The substrate is in contact with a first zinc-containing solution, and the zinc element in the first zinc-containing solution is attached to the substrate to obtain a first zinc-containing substrate; a zinc stripping step is performed to remove the first Part of the zinc element on the zinc-containing substrate to obtain a zinc-exfoliated substrate; performing a second zinc replacement step is to contact the zinc-exfoliated substrate with a second zinc-containing solution, and wait for the zinc-exfoliated substrate to be dissolved in the second zinc-containing solution The zinc element is attached to the stripped zinc substrate to obtain a second zinc-containing substrate; and An electroless nickel plating step is performed by contacting the second zinc-containing substrate with a nickel-containing solution, and heating the second zinc-containing substrate and the nickel-containing solution, so that a corrosion-resistant protective layer is formed on the second zinc-containing substrate. One surface of the zinc substrate to obtain the layered structure with high corrosion resistance; wherein, the nickel-containing solution includes a phosphorus-containing mixture and a nickel-containing mixture, and the volume ratio of the phosphorus-containing mixture to the nickel-containing mixture is 4:1~ 1.5:1, the phosphorus-containing mixture contains hypophosphite, and the proportion of hypophosphite in the phosphorus-containing mixture is 10wt%~35wt%, and the nickel-containing mixture contains nickel salt, and the proportion of nickel salt in the nickel-containing mixture is 10wt% ~50wt%, and the material of the corrosion-resistant protective layer includes nickel and phosphorus. The method for preparing a highly corrosion-resistant layered structure according to claim 11, wherein the material of the original base material is an aluminum alloy material. The method for preparing a highly corrosion-resistant layered structure as described in claim 11, wherein the pretreatment step includes: performing a degreasing step, which is to heat and/or perform a chemical reaction on the original substrate to remove oil stains on the original substrate, to obtain a degreasing base material; and performing an acid washing step, which is to wash the degreasing base material with an acidic solution to remove oxides on the degreasing base material to obtain the base material. The method for preparing a highly corrosion-resistant layered structure according to claim 11, wherein in the electroless nickel plating step, the second zinc-containing substrate and the nickel-containing solution are heated to 70°C~95°C and maintained for at least 1 hour , to form The corrosion protection layer. The method for preparing a highly corrosion-resistant layered structure according to Claim 11, wherein the thickness of the corrosion-resistant protective layer is 15 μm to 50 μm. The method for preparing a highly corrosion-resistant layered structure according to claim 11, wherein the phosphorus content of the corrosion-resistant protective layer is 9wt%~13wt%. The method for preparing a highly corrosion-resistant layered structure as described in Claim 11, wherein the material of the corrosion-resistant protective layer further includes fluoride ions, nitrate ions, phosphate ions, sodium ions, potassium ions and magnesium ions, and the content of the fluoride ions is 1×10 ¹² /cm ² to 4×10 ¹³ /cm ² , the content of the nitrate ion is 5×10 ¹² /cm ² to 2×10 ¹⁴ /cm ² , the content of the phosphate ion is 5×10 ¹¹ /cm ² to 1.5×10 ¹⁴ /cm ² , the sodium ion content is 1×10 ¹² /cm ² to 1.5×10 ¹⁴ /cm ² , the potassium ion content is 1× 10 ¹² /cm ² to 1×10 ¹⁴ /cm ² , and the magnesium ion content is 1×10 ¹² /cm ² to 1×10 ¹⁴ /cm ² . A layered structure with high corrosion resistance, which is prepared by the method for preparing a layered structure with high corrosion resistance according to any one of claim 11 to claim 17.

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