The dependence of current density on the conductivity and the wear rate for the electric contact steel/steel 45 under conditions of dry sliding friction at current density higher 100 A/cm{2} has been presented. It has been determined that the increase in the content of alloying elements or reinforcing phase in the initial structure of the steel leads to lower strength of the surface layer, resulting in a high wear rate of contact and catastrophic wear at a low current density. It has been noted that the rapid destruction of the surface layer of alloy steels is caused by their low plasticity limits. The high values of wear resistance of non-alloyed steel at friction with current collection are due to the instability to the rotary and shear deformation, as well as to the formation of a viscous fluid on the sliding surface.
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机译：提出了在干式滑动摩擦条件下，电流密度高于100 A / cm {2}时，电流密度对电接触钢45导电率和磨损率的依赖性。已经确定，钢的初始结构中合金元素或增强相含量的增加导致表面层的强度降低，从而导致在低电流密度下的高接触磨损率和灾难性磨损。已经注意到，合金钢表面层的快速破坏是由于它们的低塑性极限引起的。非合金钢在与集流体摩擦时具有很高的耐磨性，这是由于旋转和剪切变形的不稳定性以及在滑动表面上形成粘性流体所致。
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