Friction and Wear Mechanism of MoS2/C Composite Coatings Under Atmospheric Environment
Friction and Wear Mechanism of MoS2/C Composite Coatings Under Atmospheric Environment
复制标题
MoS2/C复合涂层在大气环境下的摩擦磨损机理
DOI：
10.1007/s11249-017-0862-4
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发表时间：
2017-09-01
影响因子：
3.2
通讯作者：
Zhu, Yuejin
中科院分区：
文献类型：
--
作者：
Cai, Sheng;Guo, Peng;Zhu, Yuejin
系统研究了磁控溅射沉积的不同碳含量（44.7-84.3 at.%）MoS2/C涂层在大气环境下的摩擦学性能。在摩擦学测试中，MoS2含量最少的涂层表现出最低的摩擦系数和磨损率，而MoS2含量最多的涂层表现出最差的性能。为了了解摩擦磨损机理，应用了 SEM、EDS、拉曼、XPS 和 TEM 等多种分析工具来研究其成分和结构。 TEM和SEM特征证明摩擦副上形成了多层结构的摩擦膜。富C层粘附在摩擦对上，顶层是有序的MoS2摩擦膜，并且在两层之间发现了主要的非晶MoS2。这表明剪切面主要由有序的MoS2转移膜组成，而碳改善了涂层的机械性能，充当润滑剂并抑制MoS2的氧化。
Tribological properties of MoS2/C coatings with different carbon contents (44.7-84.3 at.%) deposited by magnetron sputtering were systematically investigated under atmospheric environment. During tribological tests, the coating with the least MoS2 content exhibited the lowest friction coefficient and wear rate, while coating with the most MoS2 showed the worst performance. To understand friction and wear mechanism, multiple analytical tools such as SEM, EDS, Raman, XPS and TEM were applied to investigate the composition and structure. TEM and SEM characteristics proved that the tribofilm with multilayered structure was formed on the tribopair. The C-rich layer adhered to the tribopair and the top layer was well-ordered MoS2 tribofilm, and the dominated amorphous MoS2 was found between the two layers. It suggested that the shear plane was mainly made of wellordered MoS2 transfer film, while carbon improved the mechanical properties of the coatings, served as a lubricant and also inhibited the oxidation of MoS2.