The possibility is considered of increasing the electrical conductivity of the electrical contact under dry sliding with current density exceeding 100 A/cm2 by means of application of a molybdenum counterbody. It is shown that sliding of tungsten and a sintered metal composite against molybdenum is characterized by low electrical conductivity and low wear resistance of the contact. It is shown that a change in the contact pressure in the range of 0.02–0.13 MPa and a change in the sliding velocity in the range of 5–10 m/s yields no significant increase in the electrical conductivity and the wear resistance of the contact. The x-ray analysis shows the absence of equilibrium oxides on the sliding molybdenum and tungsten surfaces. Nonequilibrium chemical compounds are also formed during friction. The formation of the transfer layers and their deterioration due to contact adhesion are established. The stress relaxation by the mechanism of low-cycle fatigue in the surface layer is considered as a main reason for fast deterioration of the surface layer and high wear intensity. These data on the structure of the surface layers and the unsatisfactory characteristics of the contact suggest the impossibility of significant improvement of the sliding parameters with current collection against molybdenum and inexpediency of its application as a counterbody under these conditions.

中文翻译：

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钼和金属材料在干滑电流作用下表层的劣化和结构特征

考虑通过应用钼配对体来增加在电流密度超过 100 A/cm2 的干滑动下电接触的导电性的可能性。结果表明，钨和烧结金属复合材料对钼的滑动具有低导电性和低耐磨性的特点。结果表明，接触压力在 0.02-0.13 MPa 范围内的变化和滑动速度在 5-10 m/s 范围内的变化不会导致接触的电导率和耐磨性显着增加。 . X 射线分析显示在滑动的钼和钨表面上不存在平衡氧化物。在摩擦过程中也会形成非平衡化合物。转移层的形成及其由于接触粘附而导致的劣化被确定。表层低周疲劳机制引起的应力松弛被认为是表层快速劣化和高磨损强度的主要原因。这些关于表面层结构的数据和不令人满意的接触特性表明，不可能通过对钼的电流收集来显着改善滑动参数，并且在这些条件下将其用作配对体是不方便的。