速度对铜基粉末冶金/铬青铜摩擦副载流特性的影响  

Effect of Velocity on Current-carrying Behavior of Cu-based Powder Metallurgy/QCr0.5 Couples Under Electric Current

作　　者：赵燕霞[1] 刘敬超[1] 孙乐民[1] 上官宝[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《热加工工艺》2010年第16期4-6,共3页Hot Working Technology

基　　金：国家973项目(2007CB607603);国家自然科学基金资助项目(50975078)

摘　　要：在自制的销-盘式载流摩擦磨损试验机上,对铜基粉末冶金/铬青铜摩擦副载流特性进行了研究。结果表明,离线率随速度的增大近乎呈线性增大;滑动速度较高时,载流效率迅速降低,载流稳定性升高,载流质量急剧下降;载流效率、载流稳定性与电弧能量的大小密切相关,电弧能量越大,载流质量越差。The current-carrying behavior of Cu-based powder metallurgy / QCr0.5 couples under electric current was investigated by self-made friction wear testing machine.The experimental results show that the off-line rate almost increases linearly with the increase of velocity.At low velocity,the carrying-current quality declines,the current-carrying efficiency quickly drops and current-carrying stability rises.The current-carrying efficiency and current-carrying stability are closely related to the arc energy.The higher the arc energy,the worse the carrying-current quality.

关 键 词：铜基粉末冶金/铬青铜摩擦副 载流质量 电弧能量 

分 类 号：TG146.11[一般工业技术—材料科学与工程]