Abstract Molybdenum dithiocarbamate (MoDTC) is well-known as a friction-modifier in engine oil but has wear accelerating effects on DLC/steel sliding contact. Since MoDTC was reported degradable to other materials, the effect of each material on wear acceleration has not been clarified yet. Therefore, it is necessary to divide which Mo-derived compound has a major role to enhance wear. Thus, powder-type MoDTC, MoO3, Mo2C, MoS2, and Mo were dispersed into Poly-alpha-olefin (PAO), and tested on a-C:H and Si-DLC against steel ball at room temperature. For Mo2C, MoDTC, and MoO3, the specific wear rate of a-C:H was approximately 3.4 × 10−5, 3.2 × 10−6 and 1.5 × 10−6 mm3/Nm, respectively. MoDTC indicated higher affection than MoO3 regardless of the particles’ hardness. Si-DLC showed better wear prevention compared to a-C:H.

中文翻译：

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室温下MoDTC衍生颗粒在硅和氢化类金刚石碳上的磨损分类

摘要 二硫代氨基甲酸钼 (MoDTC) 是众所周知的发动机油摩擦改进剂，但对 DLC/钢滑动接触具有加速磨损作用。由于据报道 MoDTC 可降解为其他材料，因此尚未阐明每种材料对磨损加速的影响。因此，有必要区分哪种钼衍生化合物对增强磨损起主要作用。因此，将粉末型 MoDTC、MoO3、Mo2C、MoS2 和 Mo 分散到聚α-烯烃 (PAO) 中，并在室温下对钢球在 aC:H 和 Si-DLC 上进行测试。对于 Mo2C、MoDTC 和 MoO3，aC:H 的比磨损率分别约为 3.4 × 10−5、3.2 × 10−6 和 1.5 × 10−6 mm3/Nm。无论颗粒的硬度如何，MoDTC 都显示出比 MoO3 更高的影响。与 aC:H 相比，Si-DLC 显示出更好的耐磨性。