wear mass loss

The load adding will augment their wear mass loss.

随着载荷的增加其摩擦系数略有增加；

The wear mass loss is high when the abrasive medium has high hardness, multilayer coating shows better wear properties than single-layer coating in the effect of biggish load.

磨料的硬度较高时，涂层的磨损质量损失较大，与单层涂层相比，多层涂层在较高载荷作用下具有较好的抗磨损性能。

The result shows that in the ring-block sliding wear test, with time prolonging, the friction coefficient of all samples becomes more and more stable, and the mass wear loss increases.

结果表明：在环-块滑动摩擦实验中，随时间延长，试样摩擦系数均趋向平稳，质量磨损量均增长。