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Wear acceleration of a-C:H coatings by molybdenum-derived particles: Mixing and temperature effects
Tribology International ( IF 6.1 ) Pub Date : 2021-02-23 , DOI: 10.1016/j.triboint.2021.106944
K.A.M. Kassim , T. Tokoroyama , M. Murashima , W.-Y. Lee , N. Umehara , M.M.B. Mustafa

MoDTC has also been reported to degrade into other Mo-derived compounds. It is essential to analyze the effects of each type of MoDTC-degraded material on DLC. Therefore, we chose powder-type MoDTC, MoS2, Mo, MoO3, and Mo2C additives to be dispersed individually into a base oil and tested on an a-C:H sliding against a steel ball under boundary lubrication conditions at 80 °C. We then obtained surface-enhanced Raman scattering (SERS), which proved that MoS2 has the possibility of extracting hydrogen from the topmost surface as chemical wear (hydrogen content decreased from 30 to 35 at.% to 20 at.% of as-deposited) and that MoO3, MoDTC, and Mo have the possibility of catalytic reactions with carbon atoms. Mo2C exhibited abrasive accelerate of the a-C:H wear.



中文翻译:

钼来源的颗粒加速aC:H涂层的磨损:混合和温度效应

据报道,MoDTC可以降解成其他Mo衍生的化合物。必须分析每种MoDTC降解材料对DLC的影响。因此,我们选择粉末型MoDTC,MoS 2, Mo,MoO 3和Mo 2 C添加剂分别分散到基础油中,并在aC:H下在80°C的边界润滑条件下在钢球上滑动进行测试。然后,我们获得了表面增强拉曼散射(SERS),这证明了MoS 2有可能随着化学磨损而从最表面上提取氢(氢含量从沉积时的30%降至35 at。%,降至20 at。%。 ),而MoO 3,MoDTC和Mo可能与碳原子发生催化反应。莫2 C表现出aC:H磨损的磨料加速。

更新日期:2021-03-08
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