Organic molybdenum lubricant additive like molybdenum dialkyl dithiocarbamate (MoDTC) can cause wear acceleration of diamond-like carbon (DLC) coating coupled with steel under boundary lubrication, which hinders its industrial application. Therefore, polyisobutylene succinimide (PIBS), an organo molybdenum amide, was adopted to modify molybdenum oxide affording molybdenum polyisobutylene succinimide-molybdenum oxide nanoparticles (MPIBS-MONPs) with potential to prevent the wear acceleration of DLC coating. The thermal stability of MPIBS-MONPs was evaluated by thermogravimetric analysis. Their tribological properties as the additives in di-isooctyl sebacate (DIOS) were evaluated with MoDTC as a control; and their tribomechanism was investigated in relation to their tribochemical reactions and synergistic tribological effect with zinc dialkyldithiophosphate (ZDDP) as well as worn surface characterizations. Findings indicate that MPIBS-MONPs/ZDDP added in DIOS can significantly reduce the friction and wear of DLC coating, being much superior to MoDTC. This is because MPIBS-MONPs and ZDDP jointly take part in tribochemical reactions to form a composite tribofilm that can increase the wear resistance of DLC coating. Namely, the molybdenum amide on MPIBS-MONPs surface can react with ZDDP to form MoS₂ film with excellent friction-reducing ability; and MPIBS-MONPs can release molybdenum oxide nanoparticle to form deposited lubrication layer on worn surfaces. The as-formed composite tribofilm consisting of molybdenum oxide nanocrystal, amorphous polyphosphate, and molybdenum disulfide as well as a small amount of Mo₂C accounts for the increase in the wear resistance of DLC coating under boundary lubrication.

二烷基二硫代氨基甲酸钼（MoDTC）等有机钼润滑剂添加剂在边界润滑下会导致类金刚石碳（DLC）涂层与钢的磨损加速，阻碍了其工业应用。因此，采用有机钼酰胺聚异丁烯琥珀酰亚胺（PIBS）对氧化钼进行改性，得到钼聚异丁烯琥珀酰亚胺-氧化钼纳米颗粒（MPIBS-MONPs），具有防止DLC涂层加速磨损的潜力。通过热重分析评估MPIBS-MONPs的热稳定性。以 MoDTC 作为对照，评估了它们作为癸二酸二异辛酯 (DIOS) 添加剂的摩擦学性能；研究了它们的摩擦化学反应和与二烷基二硫代磷酸锌 (ZDDP) 的协同摩擦学效应以及磨损表面特征的摩擦机制。研究结果表明，DIOS中添加的MPIBS-MONPs/ZDDP可以显着降低DLC涂层的摩擦和磨损，其性能远优于MoDTC。这是因为MPIBS-MONPs和ZDDP共同参与摩擦化学反应，形成复合摩擦膜，可以提高DLC涂层的耐磨性。即MPIBS-MONPs表面的钼酰胺可以与ZDDP反应形成MoS 研究结果表明，DIOS中添加的MPIBS-MONPs/ZDDP可以显着降低DLC涂层的摩擦和磨损，其性能远优于MoDTC。这是因为MPIBS-MONPs和ZDDP共同参与摩擦化学反应，形成复合摩擦膜，可以提高DLC涂层的耐磨性。即MPIBS-MONPs表面的钼酰胺可以与ZDDP反应形成MoS 研究结果表明，DIOS中添加的MPIBS-MONPs/ZDDP可以显着降低DLC涂层的摩擦和磨损，其性能远优于MoDTC。这是因为MPIBS-MONPs和ZDDP共同参与摩擦化学反应，形成复合摩擦膜，可以提高DLC涂层的耐磨性。即MPIBS-MONPs表面的钼酰胺可以与ZDDP反应形成MoS₂薄膜具有优异的减摩能力；MPIBS-MONPs 可以释放氧化钼纳米颗粒，在磨损表面形成沉积润滑层。所形成的由氧化钼纳米晶、无定形聚磷酸盐、二硫化钼以及少量Mo ₂ C组成的复合摩擦膜导致了DLC涂层在边界润滑下耐磨性的增加。