李卫平,刘慧丛,周丽丽,朱立群.Al2 03 -Cu、CNT-Cu、石墨-Cu复合铸件的制备及性能研究[J].表面技术,2008,37(6):1-4.
LI Wei-ping,LIU Hui-cong,ZHOU Li-li,ZHU Li-qun.The Fabrication and Performance of Al203-Cu, CNT-Cu and Graphite-Cu Materials by Composite Electroforming[J].Surface Technology,2008,37(6):1-4
Al2 03 -Cu、CNT-Cu、石墨-Cu复合铸件的制备及性能研究
The Fabrication and Performance of Al203-Cu, CNT-Cu and Graphite-Cu Materials by Composite Electroforming
投稿时间:2008-07-28  修订日期:2008-12-10
DOI:
中文关键词:  复合电铸  电流密度  晶粒细化  微粒特性  机械性能
英文关键词:Composite electroforming  Current density  Grain refinement  Particle properties  Mechanical properties
基金项目:国家自然科学基金资助项目( 50771010)
作者单位
李卫平 北京航空航天大学材料科学与工程学院,北京100083 
刘慧丛 北京航空航天大学材料科学与工程学院,北京100083 
周丽丽 北京航空航天大学材料科学与工程学院,北京100083 
朱立群 北京航空航天大学材料科学与工程学院,北京100083 
AuthorInstitution
LI Wei-ping School of Materials Science and Engineering, Beihang University, Beijing 100083, China 
LIU Hui-cong School of Materials Science and Engineering, Beihang University, Beijing 100083, China 
ZHOU Li-li School of Materials Science and Engineering, Beihang University, Beijing 100083, China 
ZHU Li-qun School of Materials Science and Engineering, Beihang University, Beijing 100083, China 
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中文摘要:
      复合电铸技术的研究对于小型精密零部件及梯度材料的制备具有重要意义。利用纳米Al2 03碳纳米管(CNT)、石墨3种不同特性的微粒分别与Cu进行复合电铸,研究微粒特性和电流密度对复合铸层沉积速度、结晶形貌以及铸件机械性能的影响。试验结果表明:对于Al2 03 -Cu复合铸层,电流密度的增大可起到明显细化晶粒的效果,而石墨、CNT微粒本身就具有细化晶粒的作用。研究还表明,第二相微粒特性(如小尺寸效应、导电性等)对复合铸层沉积过程中晶核的形成和长大具有明显的影响。同时,微粒在基体中均匀弥散分散、晶粒尺寸以及结晶致密程度都会影响铸层的机械性能。在相同工艺条件下,石墨-Cu复合铸层具有更为均匀致密的组织结构和更为优良的机械性能。
英文摘要:
      Composite electroforming is useful to fabricate micro-structure gradient and high precise materials. Composite materials were prepared by adding different particles such as Al203 , CNT, and graphite in the Cu electroforming electrolyte. The influences of current density and particle properties were also investigated. The results show that the grain size decreases with the current density during the composite electroforming of Al203-Cu. And the addition of CNT or graphite particles promotes the grain refinement. The second phase of particles can affect the nuclear-up process of the codeposition of CNT-Cu due to the small size effect and conductivity of the CNT particles. And it is proved that the uniform distribution of particles and the grain size can affect the mechanical properties of the electroforming composites. Graphite-Cu composite electroforming material shows more uniform micro-structure and better mechanical properties than Al203-Cu and CNT-Cu composites fabricated under the same conditions.
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