Fe316L涂层制备及在油润滑工况下摩擦学性能研究

Preparation of Fe316L Coating and its Tribological Performance Under Different Working Conditions

摘要

利用等离子喷涂工艺在高硅铝合金基体上制备了Fe316L不锈钢涂层，通过SRV-4往复式微动磨损试验机评价了涂层在80℃油润滑环境下的摩擦学性能，并采用扫描电子显微镜（SEM）、能谱分析仪（EDS）、X射线光电子能谱（XPS）、拉曼光谱仪（Raman）等分析手段研究了涂层微观组织、硬度、结合强度、物相组成以及磨损机理。结果表明：Fe316L涂层力学性能优异，显微硬度为268.38HV_0.1，结合强度为39.97MPa，拉伸强度为42.22MPa。在油润滑环境下，涂层和铝合金表面的磨损机制分别为轻微的磨粒磨损及严重的磨粒磨损伴随着剥落，涂层的摩擦系数和磨损率分别低至0.14和5.57×10^-7mm³/(N·m)。因此，采用等离子喷涂制备Fe316L不锈钢涂层可显著提升铝合金发动机汽缸的抗磨损性能。

Abstract

The Fe316L stainless steel coating was prepared on a high-silicon aluminum alloy substrate by plasma spraying process, and the tribological properties of the coating were evaluated by SRV-4 reciprocating micromotor wear tester under oil lubrication at 80 ℃, and the microstructure, hardness, bond strength, physical phase composition and wear mechanism of the coating were investigated by scanning electron microscope (SEM), spectrum analyzer (EDS), X-ray photoelectron spectroscopy (XPS), Raman spectrometer (Raman) and other analytical methods. The results show that the mechanical properties of Fe316L coating are excellent, with a microhardness of 268.38HV_0.1, a bond strength of 39.97MPa, and a tensile strength of 42.22MPa. In the oil lubrication environment, the wear mechanisms of the coatings and the aluminum alloy surfaces were slight abrasive wear and severe abrasive wear accompanied by spalling, respectively, and the friction coefficients and wear rates of the coatings were as low as 0.14 and 5.57×10^-7mm³/(N·m), respectively. Therefore, the Fe316L stainless steel coating prepared by plasma spraying can significantly improve the anti-wear performance of aluminum alloy engine cylinders.

关键词

等离子喷涂 / Fe316L涂层 / 铝合金 / 磨损机制

Key words

atmospheric plasma spraying / Fe316L coating / aluminum alloy / wear mechanism

参考文献

[1] 毛俊元, 郑卫刚. 激光重熔-等离子喷涂陶瓷纳米涂层在气缸套内壁中的研究[J]. 叉车技术, 2014(4):22-24.

[2] 杜忠泽, 芮星, 王强, 等. 铝合金汽车发动机缸体内壁表面改性的研究进展[J]. 材料导报, 2018, 32(S1): 336-340.

[3] S.K. Balijepalli, L. Ceschini, I. Ciancaglioni, S. Kaciulis, A. Mezzi, R. Montanari, C. Martini, G. Verona Rinati, Corrosion effect to the surface of stainless steel treated by two processes of low temperature carburization, Surf. Interface Anal. 46 ( 2014) 731-734.

基金资助

中国科学院战略重点研究计划(XDB0470302)

国家自然科学基金(批准号51505378)

国家自然科学基金(52072380)

国家自然科学基金(52405229)

甘肃省重大科技项目(批准号23ZDGA011)

甘肃省基础研究创新群体项目(批准号24JRRA785)

中国科学院兰州化学物理研究所固体润滑国家重点实验室开放项目(批准号LSL-2311)

中央引导地方科技发展基金(批准号211084337120)

陕西省自然科学基础研究项目(2023-JC-YB-466)