Tribology Dependence of Annealed a-C:H Films in Dry Air and Methanol Environments,ACS Omega

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Tribology Dependence of Annealed a-C:H Films in Dry Air and Methanol Environments
ACS Omega ( IF 3.7 ) Pub Date : 2022-02-23 , DOI: 10.1021/acsomega.1c05105
Zhenguo Lai _{1,

2} , Changning Bai _{1,

2} , Lei Sun _{1,

2} , Qian Jia _{1,

2} , Kaixiong Gao ₁ , Bin Zhang _{1,

2,

3}

Affiliation

In the present study, we obtained a-C:H films with different nanostructures by annealing from room temperature to 400 °C. The influence of the nanostructures on tribological performance in dry air and methanol environments was investigated by a reciprocating tribometer. Our results show that the tribological performance of a-C:H films follows different rules in the two environments. In dry air, tribological properties are controlled by the transfer film and mechanical properties. In methanol, friction and wear are determined by the hydrogen bonding structure, where friction coefficients relate on saturation effects of sp³-CH, and the wear properties depend on the “collapse effect” that the more the sp³-CH₃ and sp³-CH₂, the easier the wear out of bulk a-C:H films. Our work provides guidance for the application of a-C:H films in the methanol environment.

中文翻译：

干燥空气和甲醇环境中退火 aC:H 薄膜的摩擦学依赖性

在本研究中，我们通过从室温到400℃退火获得了具有不同纳米结构的aC:H薄膜。通过往复式摩擦试验机研究了纳米结构对干燥空气和甲醇环境中摩擦学性能的影响。我们的结果表明，aC:H 薄膜的摩擦学性能在两种环境中遵循不同的规则。在干燥空气中，摩擦性能由转移膜和机械性能控制。在甲醇中，摩擦和磨损由氢键结构决定，其中摩擦系数与sp ³ -CH的饱和效应有关，磨损性能取决于sp ³ -CH ₃和sp ³越多的“塌陷效应” -CH ₂ ，块状 aC:H 薄膜越容易磨损。我们的工作为 aC:H 薄膜在甲醇环境中的应用提供了指导。

更新日期：2022-02-23

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