模拟空间环境摩擦试验技术

Tribological Testing Technology in Simulated Space Environments

将空间环境模拟技术和摩擦试验技术组合,实现了超高真空、交变温度和原子氧、紫外、质子和电子等多种辐照环境摩擦试验功能。该摩擦试验采用球-盘滑动摩擦试验技术,采用重力法施加法向载荷,通过计算机采集摩擦力数据并控制滑动速度,摩擦力数据经计算机处理后实时显示摩擦系数-时间曲线。采用该技术试验了溅射沉积Ag膜在真空和原子氧辐照前后的摩擦性能,发现该膜具有较好的真空润滑性能,而在大气环境和原子氧辐照后的真空中摩擦系数均明显增大,润滑性能显著退化。结果表明,该摩擦试验技术可以获得模拟空间环境下的摩擦试验数据,适用于研究材料的空间环境摩擦学性能。

A tribological testing technology in simulated space environments has been developed by integration of simulated space environments and tribological testing technology.The simulated space environments include ultrahigh vacuum,thermal cycling,and the space irradiations,such as atomic oxygen,ultraviolet,proton and electron etc.The results showed that the simulated space environments have significant effects on friction coefficient of sputtered Ag films,and this technology can be successfully used to evaluate the tribological properties of materials in simulated space environments.