石墨和MoS_(2)对AerMet100基复合材料摩擦学性能的影响  

Effects of Adding MoS_(2) and Graphite on Tribological Properties of AerMet100 Matrix Composites

作　　者：苟州 李长生[1] 张号 季琳琳 GOU Zhou;LI Chang-sheng;ZHANG Hao;JI Lin-lin(School of Materials Science and Engineering,Jiangsu University,Zhenjiang 212000,China)

机构地区：[1]江苏大学材料科学与工程学院,江苏镇江212000

出　　处：《材料保护》2022年第5期23-28,共6页Materials Protection

摘　　要：为了提高AerMet100钢的摩擦学性能,以AerMet100钢粉为基体,添加MoS_(2)和石墨为固体润滑剂,采用粉末冶金工艺制备石墨/MoS_(2)/AerMet100复合材料;使用扫描电镜(SEM)、X射线衍射(XRD)、能谱仪(EDS)分析试样的微观形貌、相组成和元素含量,使用HT1000高温摩擦磨损试验机测试复合材料的摩擦学性能;研究了MoS_(2)和石墨含量对AerMet100基复合材料力学性能和摩擦学性能的影响,探讨了其减摩耐磨机理。结果表明:随着石墨含量的增加,复合材料的力学性能和摩擦学性能下降。当添加质量分数6.0%MoS_(2)和2.0%石墨时,AerMet100基复合材料的摩擦学性能最优,这主要归因于硬质相碳化物和润滑相硫化物的生成。In order to improve the tribological properties of AerMet100 steel, graphite/MoS_(2)/AerMet100 composites were prepared applying powder metallurgy process with AerMet100 steel powder serving as the matrix, and MoS_(2)and graphite serving as the solid lubricant. Scanning electron microscope(SEM), X-ray diffraction(XRD), energy dispersive spectrometer(EDS) were used to analyze the microscopic morphology, phase composition and contents of the elements of samples, and the friction performance of the composites was tested by the HT1000 high temperature friction and wear testing machine. Meanwhile, the effects of the contents of MoS_(2)and graphite on the mechanical properties and tribological properties of AerMet100 matrix composites were studied, and the anti-friction and wear-resistant mechanism was also discussed. Results showed that with the increase of graphite content, the mechanical properties and tribological properties of the composites declined. When 6.0 wt.% MoS_(2)and 2.0 wt.% graphite were added, the tribological properties of AerMet100 matrix composites was the optimal mainly due to the formation of hard phase carbides and lubricating phase sulfides.

关 键 词：AerMet100基复合材料 二硫化钼 石墨 摩擦学 

分 类 号：TB33[一般工业技术—材料科学与工程]