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固体的滑动摩擦呈现静摩擦系数大于动摩擦系数。为什么会有这种普遍现象?它的机理如何?本文尝试根据摩擦的基本理论对这一问题进行理论解释。1.表面性质和表面的相互作用一般固体表面为各种第三物质的膜(或称脏污膜)所覆盖。对金属来说从脏污膜到氧化膜约有数百埃。当这些膜夹杂在摩擦面之间,就起到一种润滑膜的作用,与没有这层膜的情况相比,表现出不同的摩擦现象和摩擦力。要想彻底除掉这种脏污膜,在大气中是不可能
Solid sliding friction presents a static friction coefficient greater than the dynamic friction coefficient. Why is there such a common phenomenon and what is its mechanism? This paper tries to explain the problem theoretically according to the basic theory of friction. 1. The nature of the surface and the interaction of the surface The general solid surface for a variety of third substance film (or dirty film) covered. About a few hundred angstroms from dirty to oxide films for metals. When these films are sandwiched between the friction surfaces, they act as a lubricating film, exhibiting different friction phenomena and frictional forces as compared with the case without the film. To completely remove this dirty film, in the atmosphere is impossible