Friction Properties of Graphite Coating Deposited on Wedge-shaped Textured Aluminum Alloys Prepared by 3D Printing
Friction Properties of Graphite Coating Deposited on Wedge-shaped Textured Aluminum Alloys Prepared by 3D Printing
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3D打印楔形织构铝合金上沉积石墨涂层的摩擦性能
DOI：
10.1016/j.jmrt.2022.08.168
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发表时间：
2022-09
期刊：
影响因子：
--
通讯作者：
Dongyang Li
中科院分区：
文献类型：
--
作者：
Hongze Yin;Wengang Chen;Dongsheng Xia;Huajie Wu;Peiyao Jing;Long Chen;Luzhong Zhang;Yuhao Wang;Zexiao Wang;Dongyang Li
研究了表面改性铝合金在滑动摩擦条件下非对称表面织构的减摩机理及其对减摩性能的影响。对复合改性表面的显微组织、硬度、耐磨性、织构进行了分析和评价。利用Fluent有限元软件建立了楔形三角织构流场仿真模型。结果表明，逆时针楔形三角织构比顺时针楔形三角织构具有更好的摩擦磨损性能。表面织构有利于润滑油和磨粒的储存，表面织构复合石墨涂层能显著提高基体的摩擦学性能。非对称织构复合石墨涂层的摩擦学机理是石墨涂层的层片结构的减摩作用、微观织构的磨屑储存和动压润滑作用。
The underlying mechanism and influences of asymmetric surface texture on anti-friction & wear of a surface modified Al alloy under sliding friction were studied. Microstructure, hardness, wear resistance, texture of the composite modification surface were analyzed and evaluated. A flow field simulation model for wedge triangle texture was established with the Fluent finite element software. The results show that the counterclockwise wedge-shaped triangular texture has better friction and wear properties than the clockwise. The surface texture is beneficial to the storage of lubricating oil and abrasive particles, and the surface texture composite graphite coating can significantly improve the tribological properties of the substrate. The tribological mechanism of the asymmetric textured composite graphite coating is the antifriction effect of the lamellar structure of the graphite coating, and the storage of wear debris and the dynamic pressure lubrication effect of the micro-texture.
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DOI：
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期刊：
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