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首页> 外文期刊>Japanese Journal of Tribology >Laser clad graphite/molybdenum disulfide layers (Part 1): effect of graphite content on lubrication characteristics
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Laser clad graphite/molybdenum disulfide layers (Part 1): effect of graphite content on lubrication characteristics

机译：激光熔覆石墨/二硫化钼层（第1部分）：石墨含量对润滑特性的影响

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摘要

Thin solid lubricant layers were formed by a continuous C02 gas laser irradiation. Lubricant powders were spread on a stainless steel (SUS316) substrate with a commercial brazing flux and subjected to scanned laser beam irradiation in an argon shielded atmosphere. In the laser processing, clad layers were formed with graphite (C), molybdenum disulfide (MoS{sub}2) or their mixture under different laser power. No appreciable clad layer was formed only with graphite. However, a trace of graphite powder stuck on the substrate showed very low friction. With molybdenum disulfide powder, thick layers could be formed, but laser irradiation with excessive power induced heavy oxidation and melting of the powder and the substrate, resulting in higher friction. With powder mixture of both lubricants, composite layers with low friction could be formed under an optimum laser power. The best lubricant layer with the longest life was obtained from the mixture with graphite content of 75 vol.%.
机译：通过连续的CO 2气体激光照射形成薄的固体润滑剂层。将润滑剂粉末以市售的钎焊剂散布在不锈钢（SUS316）基底上，并在氩气保护气氛下进行扫描激光束照射。在激光加工中，在不同的激光功率下用石墨（C），二硫化钼（MoS {sub} 2）或它们的混合物形成包层。仅用石墨没有形成明显的包覆层。但是，附着在基材上的痕量石墨粉显示出非常低的摩擦力。使用二硫化钼粉末可以形成厚的层，但是用过量的功率进行激光照射会导致粉末和基材的严重氧化和熔化，从而导致更高的摩擦力。使用两种润滑剂的粉末混合物，可以在最佳激光功率下形成低摩擦的复合层。从石墨含量为75％（体积）的混合物中可获得寿命最长的最佳润滑剂层。

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