Tribological studies of soft and hard alternated composite coatings with different layer thicknesses
Tribological studies of soft and hard alternated composite coatings with different layer thicknesses
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DOI：
10.1016/j.triboint.2017.02.039
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发表时间：
2017-06
影响因子：
6.2
通讯作者：
Jun Cao;Z. Yin;Hulin Li;Gao Gengyuan
中科院分区：
文献类型：
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作者：
Jun Cao;Z. Yin;Hulin Li;Gao Gengyuan
为了研究软硬交替复合涂层的潜在摩擦学性能，在轴承材料基体上沉积了三种常见的自润滑抗磨材料。三种不同厚度的涂层被设计成包含MoS2、WC和Cu的交替层。采用不同的接触载荷和滑动速度对其进行了测试。采用有限元方法对复合涂层的损伤和失效进行了分析。结果表明，载荷和速度对涂层的摩擦性能有显著影响。软层降低摩擦系数，硬层承受较大载荷。摩擦系数可以根据负载、速度和涂层厚度进行调整。交替涂层有效地保护基体。
In order to study the potential tribology using of composite coatings in which soft and hard layers are alternated, three common self-lubricating and anti-wear materials are deposited on bearing material matrix. Coatings with three different thicknesses are engineered to contain alternated layers of MoS2, WC and Cu. They are tested by different contact loads and sliding velocities. The damage and failure of composite coatings are analyzed by finite element analysis. Results show that loads and velocities have significant effects on coating frictional properties. The soft layer decrease frictional coefficients, and the hard layer bear heavy loads. Frictional coefficients can be adjusted by loads, velocities and coating thicknesses. The matrix is protected effectively by alternated coatings.