高性能Cu-Cr-Zr合金接触导线材料的制备与性能  

Preparation and Properties of High Performance Cu-Cr-Zr Contact Lead Alloy

作　　者：刘琳静[1] 陈敬超[1] 冯晶[1] 洪振军[1] 杜晔平[1] 周晓龙[1] 

机构地区：[1]昆明理工大学稀贵及有色金属先进材料教育部重点实验室,云南省新材料制备与加工重点实验室

出　　处：《特种铸造及有色合金》2009年第9期875-877,共3页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(50874054);国家科技支撑计划重大项目(2007BAE23B03)

摘　　要：采用原位合成法制备Cu-Cr-Zr合金,并对时效试样进行显微硬度、电导率及耐磨性能测试,研究结果表明,80%冷变形处理后最大电导率比初始电导率提高约一倍,变形量越大,合金的电导率越高,冷加工态的试样在500℃以下时效处理时,对导电率的影响十分明显,而对硬度的影响较小。合金材料的磨损试验表明,不带电磨损的机制主要为粘着磨损,带电情况下磨损机制主要为磨粒磨损。Micro-hardness,electric conductivity and wear resistance of aged Cu-Cr-Zr alloy prepared by in-situ synthesis were examined. The results reveal that compared with that of initial samples,electric conductivity of 80% cold deformed alloy is increased approximately 100%,furthermore,with increasing in deformation rate,the electric conductivity of the alloy is increased. After aged at 500℃ for the cold deformed alloy,electric conductivity is obviously affected,however,change of hardness is absent. Tribological behavior is characterized by adhesive abrasion under current free while it is abrasive abrasion under current conditions.

关 键 词：Cu—Cr-Zr合金 时效 显微硬度 电导率 磨损机制 

分 类 号：TG131[一般工业技术—材料科学与工程]