摘要
以黄铜/铬青铜为摩擦副,在销-盘式摩擦磨损试验机上进行了载流摩擦学特性研究,探讨了载流条件下摩擦副的表面粗糙度对摩擦学特性的影响。结果表明:摩擦副表面粗糙度存在一个最佳值,使质量磨损率最小,载流效率、载流稳定性也较好;摩擦因数先随表面粗糙度的降低而升高,当表面粗糙度降低到一定程度以后摩擦因数的变化趋于平稳。质量磨损率随着表面粗糙度的降低先减小后增大;载流导致质量磨损率增大,且随着电流密度的增大,这种影响更加显著。
The friction and wear behavior of H68/QCr0.5 rubbing pairs under electric current roughness was investigated with an HST-100 high speed and carry current friction and wear tester. with different surface The results show that there is a best value of surface roughness,in which the mass wear rate is the smallest, current-carrying efficiency and current-carrying stability are the best. With the reduction of surface roughness, the friction coefficient rises, when the surface roughness reduces to a certain value, the friction coefficient tends to be stable. With the reduction of surface roughness, the mass wear rate decreases at first and then increases. Current leads to the increase of wear mass loss, especially when the current density increases.
出处
《润滑与密封》
CAS
CSCD
北大核心
2009年第1期29-31,55,共4页
Lubrication Engineering
基金
国家自然科学基金项目(50432020)
国家973项目(2007CB607603)
关键词
黄铜/铬青铜摩擦副
摩擦磨损
载流
表面粗糙度
磨损机制
H68/QCr0.5 rubbing pairs
friction and wear
electric current
surface roughness
wear mechanism
