Superlubricity of TiN coating using glycerol with the addition of Cu nanoparticles
Superlubricity of TiN coating using glycerol with the addition of Cu nanoparticles
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DOI：
10.1016/j.triboint.2023.108327
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发表时间：
2023-02
影响因子：
6.2
通讯作者：
X. Fu;Shuming Guo;Yong Wan;Changsheng Zheng;Qiang Li;Bingchang Liu
中科院分区：
文献类型：
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作者：
X. Fu;Shuming Guo;Yong Wan;Changsheng Zheng;Qiang Li;Bingchang Liu
超润滑性是通过添加纳米铜颗粒 (CuNP) 作为甘油的添加剂来实现的，甘油是一种可持续的润滑剂，应用于 TiN 涂层钢，并在平均接触压力为 54.6 MPa 下进行平球往复测试。当用甘油 + 0.1 wt% CuNPs 以 120 mm/s 的滑动速度润滑时，TiN 涂层的摩擦系数为 ∼ 0.007，磨损率为 2.0 × 10–8mm3/N m。 XPS和拉曼分析表明，摩擦副的接触区域沉积了一层含有CuNPs的表面摩擦膜和一层由甘油降解产生的碳基膜，有效防止了钢球和TiN涂层钢之间的直接粗糙接触，从而实现了超低摩擦。
Superlubricity was achieved by the addition of copper nanoparticles (CuNPs) as an additive to glycerol, a sustainable lubricant, which was applied to TiN-coated steel that underwent ball-on-flat reciprocating testing at an average contact pressure of 54.6 MPa. A coefficient of friction of ∼ 0.007 and a wear rate of 2.0 × 10–8mm3/N m were achieved on the TiN coating when lubricated with glycerol + 0.1 wt% CuNPs at a sliding speed of 120 mm/s. XPS and Raman analysis suggested that a surface tribofilm containing CuNPs and a carbon-based film derived from the degradation of glycerol were deposited onto the contact area of the tribopairs, which effectively prevented the direct asperity contact between the steel ball and TiN-coated steel, enabling ultra-low friction.