[go: up one dir, main page]

CN1944699B - High volume fraction endogenous particle reinforced aluminum matrix composite and its preparation method - Google Patents

High volume fraction endogenous particle reinforced aluminum matrix composite and its preparation method Download PDF

Info

Publication number
CN1944699B
CN1944699B CN200610088369A CN200610088369A CN1944699B CN 1944699 B CN1944699 B CN 1944699B CN 200610088369 A CN200610088369 A CN 200610088369A CN 200610088369 A CN200610088369 A CN 200610088369A CN 1944699 B CN1944699 B CN 1944699B
Authority
CN
China
Prior art keywords
mixture
aluminum
volume fraction
particle
composite material
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 - Fee Related
Application number
CN200610088369A
Other languages
Chinese (zh)
Other versions
CN1944699A (en
Inventor
赵玉涛
陈刚
程晓农
戴起勋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu University
Original Assignee
Jiangsu University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu University filed Critical Jiangsu University
Priority to CN200610088369A priority Critical patent/CN1944699B/en
Publication of CN1944699A publication Critical patent/CN1944699A/en
Application granted granted Critical
Publication of CN1944699B publication Critical patent/CN1944699B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Abstract

一种高体积分数内生颗粒增强铝基复合材料及其制备方法,涉及颗粒增强复合材料及其制备方法,采用熔体直接反应法制备,在含18-26wt%Si的高硅铝合金熔体中加入占铝液质量的20wt%~30wt%反应物,反应物为ZrSiO4和B2O3的混合物、Zr(C03)2和B2O3的混合物或ZrOCl2和B2O3混合物中的一种,并按摩尔比Zr∶B=1∶2混合均匀,铝液温度在850~950℃之间,待反应20min~40min后再加入占铝液质量0.08~0.12wt%P+0.8~1.0wt%RE(稀土)的细化变质复合处理剂,处理时间为10min~20min,然后静置5min~10min,冷却至760~780℃浇入金属型中凝固获得多相内生颗粒(Si+Al2O3+ZrB2+Al3Zr)增强铝基复合材料,铝基体中同时包含Al3Zr、ZrB2和Al2O3颗粒及细小Si颗粒,其中颗粒的理论体积分数为30~50%。该复合材料设计性强,制备工艺简单、成本低,性能稳定。A high volume fraction endogenous particle-reinforced aluminum-based composite material and a preparation method thereof, relating to a particle-reinforced composite material and a preparation method thereof, prepared by a melt direct reaction method, in a high-silicon aluminum alloy melt containing 18-26wt% Si Add 20wt% to 30wt% of the reactants in the molten aluminum, and the reactants are a mixture of ZrSiO 4 and B 2 O 3 , a mixture of Zr(C0 3 ) 2 and B 2 O 3 or a mixture of ZrOCl 2 and B 2 O 3 One of them, and mix evenly according to the molar ratio Zr:B=1:2, the temperature of the aluminum liquid is between 850-950°C, after 20min-40min of reaction, add 0.08-0.12wt% P+0.8 of the mass of the aluminum liquid ~1.0wt% RE (rare earth) refinement and modification compound treatment agent, the treatment time is 10min~20min, then stand still for 5min~10min, cool to 760~780℃, pour into metal mold and solidify to obtain multiphase endogenous particles (Si +Al 2 O 3 +ZrB 2 +Al 3 Zr) reinforced aluminum matrix composite material, the aluminum matrix contains Al 3 Zr, ZrB 2 and Al 2 O 3 particles and fine Si particles at the same time, and the theoretical volume fraction of the particles is 30~ 50%. The composite material has strong designability, simple preparation process, low cost and stable performance.

Description

High volume fractional endogenous granular reinforced aluminum base composite material and preparation method thereof
Technical field
The present invention relates to particulate reinforced composite and preparation method thereof.Specifically, the present invention relates to utilize spontaneous silicon grain+endogenetic particle (Si+Al of high-volume fractional (more than 30%) 2O 3+ Al 3Zr+ZrB 2) compound enhanced aluminum matrix composite and preparation method thereof.
Background technology
Particle enhanced aluminum-based composite material has the specific tenacity height, strengthen that the body cost is low, microtexture evenly, material property isotropy, advantage such as can adopt that conventional machining process is processed, become one of important development direction of metal-base composites.Particle enhanced aluminum-based composite material can be divided into according to the source of enhanced granule wherein and adds particle enhanced aluminum-based composite material and the synthetic particle enhanced aluminum-based composite material of reaction.
In many application scenarios, require the aluminum matrix composite of exploitation high-volume fractional (more than 30%) enhanced granule.For example, be used for the SiC particle enhanced aluminum-based composite material of automobile brake disc, SiC particulate volume fraction is about 30-50%.Adopt such matrix material can make the original ironcasting of weight ratio of automobile brake disc alleviate 50-60%, braking distance shortens, and the brake flange heat-shock resistance improves, and makes braking ability stable.But, owing to add the SiC particle and liquid Al is nonwetting, and have surface reaction, so SiC particle enhanced aluminum-based composite material plasticity low (being not more than 0.3%), crack propagation are fast, can cause under shear-stress fatigue cracking to be expanded fast, may cause burst accident.Usually, these crackles are easy to expand in adding the SiC particle enhanced aluminum-based composite material.This is that it is big to exist particle size owing to add that enhanced granule is added by the outside in the particle enhanced aluminum-based composite material, and particle surface has pollution, and the interface is in conjunction with poor, and easily generates a series of shortcomings such as fragility by product.
Endogenetic particle strengthens in-situ composite (In-situ Composites), is meant that it strengthens body original position forming core, thermodynamically stable phase of growing up from metallic matrix (being generally Al).Therefore, the enhancing surface is pollution-free, has avoided the problem bad with the matrix consistency, and the interface bond strength height.Thereby be described as and have breakthrough new technology and extremely pay attention to, become a new focus in the research of metal matrix (particularly aluminium base) matrix material.The original position synthetic technology mainly contains XD at present TMMethod, DIMOX TMMethod, PRIMEX TMMethod, VLS method, LSM method, SHS method, CR method, MA method, melting-reaction method (Direct Melt Reaction; DMR) etc.; wherein; melting-reaction method is that solid particulate or the powder that will contain the enhanced granule forming element join in the fused aluminum or aluminum alloy under a certain temperature; make it abundant reaction; thereby the preparation endogenous granular reinforced aluminum base composite material, and can directly pour into a mould complex-shaped foundry goods.Thereby, have that technology is simple, cost is low, the cycle is short, be easy to advantages such as suitability for industrialized production, and be considered to realize one of new technology of industrial applications.But endogenous granular reinforced aluminum base composite material is defectiveness also, is that mainly its synthetic grain volume fraction is usually less than 15vol%, and the braking automobile hub uses the volume fraction of particle enhanced aluminum-based composite material to require at 30~50vol%.Therefore, the volume fraction that how to improve endogenetic particle is the key of dealing with problems.
Therefore, exploitation had both possessed the advantage of high thermal conductivity and high-wearing feature, possessed the endogenous granular reinforced aluminum base composite material of good plasticity again, was the important content of high-volume fractional aluminum matrix composite exploitation.The present invention proposes to utilize spontaneous silicon grain+endogenetic particle (Si+Al 2O 3+ Al 3Zr+ZrB 2) compound reinforced aluminum matrix composites, this technology does not still have relevant report at home and abroad.
Summary of the invention
The present invention generates (Al with reaction in synthetic technology and rotten composite treatment technology of primary silicon refinement and the integrated silumin that is applied to of electromagnetic field processing by molten aluminium and reactant reaction 2O 3+ ZrB 2+ Al 3Zr) particle, and in process of setting, produce a large amount of tiny Si particles through phosphorus-rare earth Combined Processing by silumin, thus form the high-volume fractional enhanced granule of 30%~50vol%.
A kind of high volume fractional endogenous granular reinforced aluminum base composite material is characterized in that: comprise Al in the aluminum substrate simultaneously 3Zr, ZrB 2And Al 2O 3Particle and tiny Si particle, wherein particulate theoretical volume mark is 30~50%.
A kind of preparation method of high volume fractional endogenous granular reinforced aluminum base composite material, adopt the preparation of melt direct reaction method, it is characterized in that: the particle intensified response thing that in containing the silumin melt of 18-26wt%Si, adds the 20wt%~30wt% that accounts for aluminium liquid quality, temperature of aluminum liquid is between 850~950 ℃, add the rotten composite treating agent of the refinement that accounts for aluminium liquid quality 0.08~0.12wt%P+0.8~1.0wt%RE (rare earth) behind question response 20min~40min again, treatment time is 10min~20min, leave standstill 5min~10min then, be cooled to 760~780 ℃ and pour into to solidify in the metal mold and obtain heterogeneous endogenetic particle (Si+Al 2O 3+ ZrB 2+ Al 3Zr) reinforced aluminum matrix composites.According to different needs, can direct production foundry goods or production ingot casting.
Particle intensified response thing is ZrSiO 4And B 2O 3Mixture, Zr (CO 3) 2And B 2O 3Mixture or ZrOCl 2And B 2O 3A kind of in the mixture, and Zr: B=1 in molar ratio: 2 mix.
When adding reaction mixture, carry out induction stirring and handle, electric current I=150A, frequency f=4Hz, magnetic induction density B=0.032mT can be so that endogenetic particle be evenly distributed.
The present invention has following advantage:
1, because the silicone content in the silumin can be adjusted within the specific limits, utilize the volume fraction of the in-situ particle of fusant reaction technology preparation also can change within the specific limits simultaneously, so the designability of such matrix material is strong.
2, because the primary silicon particle and the in-situ particle that generate are endogenetic particle, and good with the Al wettability, but and once shaped, so preparation technology is simple, cost is low, and not only have high strength, high-wearing feature, high heat resistance, and have toughness preferably.
3, separate out owing to producing a large amount of primary silicons in the process of setting, improved the volume fraction of enhanced granule; And the primary silicon particulate is of a size of, and 25 μ m are following to be of a size of the following size that forms of 5 μ m with in-situ particle and to distribute alternately, improved the density of matrix material, produced simultaneously particle is endogenetic particle, so the interface bond strength of particle and matrix is effectively guaranteed in the matrix material, therefore, prepared matrix material has higher stability.
Embodiment
Embodiment 1
With high silicon Al-18%Si alloy melting, about 850 ℃, add the reactant that accounts for alloy mass 20%, reactant is Zr (CO 3) 2+ B 2O 3And Zr: B=1 in molar ratio: 2 mix, and carry out induction stirring simultaneously and handle electric current I=150A, frequency f=4Hz, magnetic induction density B=0.032mT adds the rotten composite treating agent of the refinement that accounts for aluminium liquid quality 0.08wt%P+0.8wt%Ce again behind the question response 20min, the treatment time is 10min, leave standstill 5min then, melt after handling is cooled to 760 ℃ directly pours into ingot casting, after testing, the volume fraction of enhanced granule is about 31.2% in this matrix material.
Embodiment 2
With high silicon Al-24%Si alloy melting, about 900 ℃, add the reactant that accounts for alloy mass 25%, reactant is ZrSiO 4+ B 2O 3And Zr: B=1 in molar ratio: 2 mix, carry out induction stirring simultaneously and handle electric current I=150A, frequency f=4Hz, magnetic induction density B=0.032mT, add the rotten composite treating agent of the refinement that accounts for aluminium liquid quality 0.1wt%P+0.9wt%Ce behind the question response 30min again, the treatment time is 15min, leaves standstill 8min then, melt after handling is cooled to 780 ℃ pours into automobile brake disc by extrusion casting. after testing, the volume fraction of enhanced granule is about 42.6%. in this matrix material
Embodiment 3
With the Al-26%Si alloy melting, about 950 ℃, add the reactant that accounts for alloy mass 30%, reactant is ZrOCl 2+ B 2O 3And Zr: B=1 in molar ratio: 2 mix, carrying out induction stirring simultaneously handles, electric current I=150A, frequency f=4Hz, magnetic induction density B=0.032mT, add the rotten composite treating agent of the refinement that accounts for aluminium liquid quality 0.12wt%P+1.0wt%Ce behind the question response 40min again, treatment time is 20min, leaves standstill 10min then, the melt after handling is cooled to 780 ℃ pours into ingot casting.After testing, the volume fraction of enhanced granule is about 49.8% in this matrix material.

Claims (3)

1.一种高体积分数内生颗粒增强铝基复合材料,其特征在于:采用熔体直接反应法制备,其特征在于:在含18-26wt%Si的高硅铝合金熔体中加入占铝液质量的20wt%~30wt%的按摩尔比Zr∶B=1∶2混合均匀的ZrSiO4和B2O3的混合物、Zr(CO3)2和B2O3的混合物或ZrOCl2和B2O3混合物;铝液温度在850~950℃之间,待反应20min~40min后再加入占铝液质量0.08~0.12wt%P+0.8~1.0wt%RE(稀土)的细化变质复合处理剂,处理时间为10min~20min,然后静置5min~10min,冷却至760~780℃浇入金属型中凝固,获得由Si+Al2O3+ZrB2+Al3Zr组成的高体积分数内生颗粒增强铝基复合材料。1. A high volume fraction endogenous particle-reinforced aluminum-based composite material, characterized in that it is prepared by a melt direct reaction method, characterized in that: adding ZhanAl to a high-silicon aluminum alloy melt containing 18-26wt% Si A mixture of ZrSiO 4 and B 2 O 3 , a mixture of Zr(CO 3 ) 2 and B 2 O 3 or ZrOCl 2 and B 2 O 3 mixture; the temperature of the aluminum liquid is between 850 and 950°C, after 20 to 40 minutes of reaction, add the refinement modification composite treatment of 0.08 to 0.12wt% P+0.8 to 1.0wt% RE (rare earth) in the mass of the aluminum liquid agent, the treatment time is 10min~20min, then stand still for 5min~10min, cool to 760~780℃ and pour into the metal mold to solidify, and obtain a high volume fraction of Si+Al 2 O 3 +ZrB 2 +Al 3 Zr Raw particle reinforced aluminum matrix composites. 2.一种如权利要求1所述的高体积分数内生颗粒增强铝基复合材料的制备方法,采用熔体直接反应法制备,其特征在于:在含18-26wt%Si的高硅铝合金熔体中加入占铝液质量的20wt%~30wt%的按摩尔比Zr∶B=1∶2混合均匀的ZrSiO4和B2O3的混合物、Zr(CO3)2和B2O3的混合物或ZrOCl2和B2O3混合物;铝液温度在850~950℃之间,待反应20min~40min后再加入占铝液质量0.08~0.12wt%P+0.8~1.0wt%RE(稀土)的细化变质复合处理剂,处理时间为10min~20min,然后静置5min~10min,冷却至760~780℃浇入金属型中凝固,获得由Si+Al2O3+ZrB2+Al3Zr组成的高体积分数内生颗粒增强铝基复合材料。2. A method for preparing a high-volume-fraction endogenous particle-reinforced aluminum-based composite material as claimed in claim 1, which is prepared by a melt direct reaction method, characterized in that: the high-silicon aluminum alloy containing 18-26wt% Si A mixture of ZrSiO 4 and B 2 O 3 , a mixture of Zr(CO 3 ) 2 and B 2 O 3 that is uniformly mixed in a molar ratio of Zr:B=1:2 and accounts for 20wt% to 30wt% of the mass of the molten aluminum is added to the melt Mixture or ZrOCl 2 and B 2 O 3 mixture; the temperature of the aluminum liquid is between 850-950°C, after 20-40 minutes of reaction, add 0.08-0.12wt% P+0.8-1.0wt% RE (rare earth) based on the mass of the aluminum liquid The refinement and modification compound treatment agent, the treatment time is 10min~20min, then stand for 5min~10min, cooled to 760~780℃ and poured into the metal mold to solidify, and obtained Si+Al 2 O 3 +ZrB 2 +Al 3 Zr Composition of high volume fraction endogenous particles reinforced aluminum matrix composites. 3.根据权利要求2所述的高体积分数内生颗粒增强铝基复合材料的制备方法,其特征在于:在加入ZrSiO4和B2O3的混合物、Zr(CO3)2和B2O3的混合物或ZrOCl2和B2O3混合物的同时进行电磁搅拌处理,电流I=150A,频率f=4Hz,磁感应强度B=0.032mT。3. The method for preparing aluminum matrix composites reinforced with high volume fraction endogenous particles according to claim 2, characterized in that: after adding the mixture of ZrSiO 4 and B 2 O 3 , Zr(CO 3 ) 2 and B 2 O 3 mixture or ZrOCl 2 and B 2 O 3 mixture are simultaneously subjected to electromagnetic stirring treatment, current I=150A, frequency f=4Hz, magnetic induction intensity B=0.032mT.
CN200610088369A 2006-07-14 2006-07-14 High volume fraction endogenous particle reinforced aluminum matrix composite and its preparation method Expired - Fee Related CN1944699B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200610088369A CN1944699B (en) 2006-07-14 2006-07-14 High volume fraction endogenous particle reinforced aluminum matrix composite and its preparation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200610088369A CN1944699B (en) 2006-07-14 2006-07-14 High volume fraction endogenous particle reinforced aluminum matrix composite and its preparation method

Publications (2)

Publication Number Publication Date
CN1944699A CN1944699A (en) 2007-04-11
CN1944699B true CN1944699B (en) 2010-05-12

Family

ID=38044348

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200610088369A Expired - Fee Related CN1944699B (en) 2006-07-14 2006-07-14 High volume fraction endogenous particle reinforced aluminum matrix composite and its preparation method

Country Status (1)

Country Link
CN (1) CN1944699B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014005486A (en) * 2012-06-22 2014-01-16 Aisin Seiki Co Ltd Method for producing aluminum composite material
CN103668013B (en) * 2013-11-12 2015-07-08 江苏大学 An in-situ superplastic pretreatment method for aluminum matrix composites

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6918970B2 (en) * 2002-04-10 2005-07-19 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration High strength aluminum alloy for high temperature applications
CN1644722A (en) * 2005-01-19 2005-07-27 江苏大学 AI-Zr-B-O reacting system for synthesizing high-performance aluminium-base copmosite material in-situ and synthetic material thereof
CN1667147A (en) * 2005-04-05 2005-09-14 江苏大学 A method for preparing endogenous particle-reinforced aluminum matrix composites on an industrial scale
CN1676644A (en) * 2005-04-26 2005-10-05 河北工业大学 Ceramic particle reinforced aluminum matrix composite material and preparation method thereof
CN1686658A (en) * 2005-05-18 2005-10-26 江苏大学 Semisolid state joining method of granular reinforced aluminium base composite material and its device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6918970B2 (en) * 2002-04-10 2005-07-19 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration High strength aluminum alloy for high temperature applications
CN1644722A (en) * 2005-01-19 2005-07-27 江苏大学 AI-Zr-B-O reacting system for synthesizing high-performance aluminium-base copmosite material in-situ and synthetic material thereof
CN1667147A (en) * 2005-04-05 2005-09-14 江苏大学 A method for preparing endogenous particle-reinforced aluminum matrix composites on an industrial scale
CN1676644A (en) * 2005-04-26 2005-10-05 河北工业大学 Ceramic particle reinforced aluminum matrix composite material and preparation method thereof
CN1686658A (en) * 2005-05-18 2005-10-26 江苏大学 Semisolid state joining method of granular reinforced aluminium base composite material and its device

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
李国强 等.Al-Zr及其Al-Zr-O体系铝基原位复合材料的制备与组织研究.铸造54 3.2005,54(3),233-237.
李国强 等.Al-Zr及其Al-Zr-O体系铝基原位复合材料的制备与组织研究.铸造54 3.2005,54(3),233-237. *
江润莲 等.Al-Zr-O-B原位合成复合材料的微观组织和力学性能.特种铸造及有色合金25 5.2005,25(5),316-318.
江润莲 等.Al-Zr-O-B原位合成复合材料的微观组织和力学性能.特种铸造及有色合金25 5.2005,25(5),316-318. *
赖华清,毛高波.磷-稀土复合变质对过共晶Al-18%Si的合金组织的影响.汽车科技 2.1998,(2),第18页右下栏第1~6行及第19页右栏第15~25行.
赖华清,毛高波.磷-稀土复合变质对过共晶Al-18%Si的合金组织的影响.汽车科技 2.1998,(2),第18页右下栏第1~6行及第19页右栏第15~25行. *

Also Published As

Publication number Publication date
CN1944699A (en) 2007-04-11

Similar Documents

Publication Publication Date Title
CN101463440B (en) A kind of aluminum-based composite material for piston and preparation method thereof
CN101608277B (en) Electromagnetic/ultrasonic preparation method of in-situ particle reinforced magnesium-based composite material
CN101608270A (en) A high-efficiency and low-cost aluminum and aluminum alloy refiner and preparation method thereof
CN102296196A (en) Cross-scale in-situ particle reinforced aluminum matrix composite material and preparation method thereof
CN101921930B (en) Multicomponent microalloyed titanium alloy and preparation method thereof
CN110423914B (en) Preparation method of rare earth magnesium alloy composite material
CN102181753B (en) Silicon and silicon carbide hybrid enhanced aluminum-base composite material and preparation method thereof
CN103160702A (en) Method for preparing silicon carbide particle reinforced aluminum matrix composite material
CN102146530B (en) Magnesium and magnesium alloy grain refining agent and preparation method thereof
CN102534314B (en) Lanthanum-hexaboride-reinforced aluminum-silicon-base composite material and preparation method thereof
CN102787265A (en) A Microstructure Refinement Method of Mg-Al-Mn-Zn Composite Materials Reinforced by In-Situ Mg2Si Particles
CN101219470A (en) Production method for reacting to synthesize Ti5Si3 particle gradient reinforcing cast aluminum base composite material
CN102676956B (en) Method for preparing iron-based surface composite material by virtue of in-situ synthesis
CN109868392A (en) A kind of aluminum matrix composite and preparation method thereof of Fe-based amorphous alloy enhancing
CN1944699B (en) High volume fraction endogenous particle reinforced aluminum matrix composite and its preparation method
CN101148722A (en) In-situ self-generated aluminum nitride and magnesium disilicate reinforced magnesium matrix composite material and preparation method thereof
CN101787475B (en) Quasicrystal particle reinforced magnesium matrix composite material and preparation method thereof
CN102489692A (en) Method for preparing Al-Ti-C-Gd grain refiner of magnesium alloys by utilizing ultrasonic waves
CN104084545B (en) The mixed liquid Modification Manners of a kind of casting Mg-Al alloy liquid melt/semi-solid melt
CN109763042B (en) Amorphous alloy reinforced composite material and preparation method thereof
CN1151299C (en) Self-reaction-powder metallurgy preparation method of titanium matrix composites
CN106544531A (en) A kind of process of In-situ Synthesis TiC Particle refining aluminum alloy solidified structure
CN109371275A (en) A kind of preparation method of flexible particle reinforced metal matrix composite material
CN103831421A (en) Method for preparing local enhancement aluminum matrix composite
CN102517477A (en) Preparation methods of intermediate alloys of Al-Ti-B-N and Zn-Al-Ti-B-N and intermediate alloys obtained therethrough

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: JIANGSU ZHONGLIAN ALUMINIUM CO.,LTD.

Assignor: Jiangsu University

Contract record no.: 2011320000432

Denomination of invention: High volume fractional endogenous granular reinforced aluminum base composite material and its preparing method

Granted publication date: 20100512

License type: Exclusive License

Open date: 20070411

Record date: 20110329

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100512

CF01 Termination of patent right due to non-payment of annual fee