US1327401A - Process of surface-coloring articles of copper alloy - Google Patents
Process of surface-coloring articles of copper alloy Download PDFInfo
- Publication number
- US1327401A US1327401A US315449A US31544919A US1327401A US 1327401 A US1327401 A US 1327401A US 315449 A US315449 A US 315449A US 31544919 A US31544919 A US 31544919A US 1327401 A US1327401 A US 1327401A
- Authority
- US
- United States
- Prior art keywords
- bath
- articles
- copper
- acid
- coloring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title description 11
- 238000004040 coloring Methods 0.000 title description 9
- 229910000881 Cu alloy Inorganic materials 0.000 title description 7
- 239000002253 acid Substances 0.000 description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 11
- 229910052802 copper Inorganic materials 0.000 description 11
- 239000010949 copper Substances 0.000 description 11
- 229910052785 arsenic Inorganic materials 0.000 description 10
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 10
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 5
- 238000007598 dipping method Methods 0.000 description 5
- 230000001590 oxidative effect Effects 0.000 description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 241001275902 Parabramis pekinensis Species 0.000 description 1
- 241000929631 Stenoterommata palmar Species 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- DPLVEEXVKBWGHE-UHFFFAOYSA-N potassium sulfide Chemical compound [S-2].[K+].[K+] DPLVEEXVKBWGHE-UHFFFAOYSA-N 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/52—Treatment of copper or alloys based thereon
Definitions
- My invention relates to an improved process of coloring metallic articles, the object being to impart a durable and handsome finish of black, or substantially black, color, to alloys of copper containing arsenic.
- my invention consists in a process of coloring articles made of alloys containing copper and arsenic, which consists in first dipping the articles in an acid oxidizing bath and then in an acid solution containing a sulfid and an arsenious compound.
- My invention further consists in a process having certain other details and steps as will be hereinafter described and pointed out in the claims.
- the proportions of the several ingredients used in the respective solutions may be varled as demanded-by their characterand strength and by the composition of the alloy, and these factors may also change the given temperatures and periods of immersion.
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Description
v at room temperature UNITED STA THURSTON C. MERRIMAN, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO WINCHESTER REPEATING ARMS 00., OF NEW HAVEN, CONNECTICUT, A CORPORATION.
PROCESS OF SURFACE-COLORING ARTICLES OF COPPER ALLOY.
earner.
1N0 Drawing.
-vented a new and useful Improvement in Processes of Surface-Coloring Articles of Copper Alloy; and I do hereby declare the following to be a full, clear, and exact description of the same.
My invention relates to an improved process of coloring metallic articles, the object being to impart a durable and handsome finish of black, or substantially black, color, to alloys of copper containing arsenic.
With these ends in view, my invention consists in a process of coloring articles made of alloys containing copper and arsenic, which consists in first dipping the articles in an acid oxidizing bath and then in an acid solution containing a sulfid and an arsenious compound.
My invention further consists in a process having certain other details and steps as will be hereinafter described and pointed out in the claims.
In carrying out my invention, the articles whatever their form and destined use and specific composition, must contain copper and a small amount of arsenic. For instance, I may apply my invention to articles of brass, consisting say of 70 parts of copper, 29 parts of zinc and one part of arsenic, or my invention may. be applied to articles of bronze consisting say of 85 parts of copper, 14 parts of-tin and one part of arsenlc. These illustrations of copper alloys will be sufficient to explain my present purpose. Other brasses and other bronzes might be used or other copper alloys, what I wish to make clear is that I any specific copper alloy so long as it contains copper and a component of arsenic.
The article after having been thoroughly cleaned, is immersed for about five minutes in an acid oxidizing bath. For this purpose, I may employ a bath made as follows 100 cc. Water,
25 cc. nitric acid, (1.42 sp. gr.,)
5 gms. potassium dichromate.
I do not limit myself to the employment of a bath so made, but hold myself at liberty to employ a bath of similar character and action so long as it is an acid oxidizing Specification of Letters Patent.
do not limit myself to' Patented Jan. 6, 1920.
Application filed August 5, 1919. Serial No. 315,449.
bath. The article is then removed from this bath, rinsed in cold Water, and then immersed 1n an acid solution containin sulfid and an arsenious salt, such as a so ution compounded as follows 2-- 710 cc. water, 7
237 cc. hydrochloric acid, (1.2 sp. gr.,)
7.1 grams potassium sulfid,
170 grams arsenious oxid.
The article is allowed to remain in the second bath for about five minutes, the solution being kept at a temperature between 140-155 degrees F. The article is then removed from the solution, rinsed thoroughly 1n cold water and dried, and preferably coated very thinly with a light oil. On its removal from the second solution, the article Wlll be found to be provided with a durable and handsome coating orfinish of black, or substantially black, color.
The proportions of the several ingredients used in the respective solutions may be varled as demanded-by their characterand strength and by the composition of the alloy, and these factors may also change the given temperatures and periods of immersion.
I do not limit myself, therefore, to any of these details, as to copper, alloys and bath,
my invention being broadly characterized by the production upon a metallic alloy contalning copper and arsenic, of a durable finish of black, or substantially black, color, by first subjecting the article to the action of an acid oxidizing bath and subsequently to an acid solution containing a sulfid and an arsenious salt. In my co-pending application filed August 5, 1919, Serial No. 315,-
448, I have claimed the article resulting from the herein described and claimed process.
I claim:
1. The process of coloring articles made of alloys containing copper and arsenic Which consists in dipping the articles in an acid, oxidizing bath and afterward in an acid solution containing a sulfid and an arsenious compound.
2. The process of coloring articles made of alloys containing copper and arsenic which consists in dipping the articles in a bath containing nitric acid and afterward in an acid bath containing an arsenious compound.
3. The process of coloring articles made of alloys containing copper and arsenic, oxid in suspension and afterward in a bath which conslsts 1n dipping the artlcles 1n a containing mineral acld, alkali sulfid, and bath contalning mineral acld and a soluble an arsenious compound.
chromate and afterward in a bath contain- In testimony whereof I have signed this 5 ing mineral acid, an alkali sulfid, and an specification in the presence of two sub- 15 arsenious compound. scribing Witnesses.
4. The process of coloring articles made THURSTON C. MERRIMAN. of alloys containing copper and arsenic Witnesses: which consists in dipping the articles in a ARTHUR W. EARLE,
10 bath containing a mineral acid and zinc ERIK S. PALMER.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US315449A US1327401A (en) | 1919-08-05 | 1919-08-05 | Process of surface-coloring articles of copper alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US315449A US1327401A (en) | 1919-08-05 | 1919-08-05 | Process of surface-coloring articles of copper alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1327401A true US1327401A (en) | 1920-01-06 |
Family
ID=23224483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US315449A Expired - Lifetime US1327401A (en) | 1919-08-05 | 1919-08-05 | Process of surface-coloring articles of copper alloy |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1327401A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987002856A1 (en) * | 1985-10-24 | 1987-05-07 | Enthone, Incorporated | Copper oxide treatment in printed circuit board |
-
1919
- 1919-08-05 US US315449A patent/US1327401A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987002856A1 (en) * | 1985-10-24 | 1987-05-07 | Enthone, Incorporated | Copper oxide treatment in printed circuit board |
| US4717439A (en) * | 1985-10-24 | 1988-01-05 | Enthone, Incorporated | Process for the treatment of copper oxide in the preparation of printed circuit boards |
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