导电摩擦副在磨损过程中产生较大磨损和较多磨屑,既影响电接触的稳定性又会降低导电环间的绝缘电阻。借助某卫星滑环的结构,导电摩擦副选用铜环电镀硬金的导电环和金银铜锌合金的电刷触点,在真空环境下开展硬金镀层的镀镍层厚度、硬度、表面光洁处理、真空加热处理、通电电流大小对电接触磨损性能影响的研究。研究结果表明:硬金镀层在真空环境下,硬度和真空加热预处理是影响磨损的显著因素,电流大小对磨损有一定影响,镀镍层厚度和光洁处理对磨损无显著影响。

In process of wear, the conductive friction pair produces greater wear and more debris, which not only affects the stability of electrical contact but also reduces the insulation resistance between the conductive rings. With the help of the structure of a satellite slip-ring, the conductive friction pair selects the conductive ring of hard gold electroplated by copper ring and the brush contacts of gold-silver-copper-zinc alloy to conduct the research on the influence of plating nickel layer thickness, hardness, surface polishing, vacuum heating and current on the electrical contact wear performance of the electrodeposited hard gold coatings under the vacuum environment. The results show that the hardness and the vacuum heating pretreatment are the significant factors affecting the wear, and the current has a certain influence on the wear. The thickness of nickel plating layer and polishing treatment has no significant effect on wear.

TG15