铜基体铬合金化对二硫化钼/铜复合材料摩擦学性能的影响及作用机制研究
Effect of Chromium Alloying on Tribological Properties of Molybdenum Disulfide/Copper Composites and Its Mechanism
赵书海 1张泽权 2王杰 2麦永津1
作者信息
- 1. 广东工业大学 材料与能源学院, 广东 广州 510006;广东省先进金属材料及成形加工工程技术研究中心, 广东广州 510006
- 2. 广东工业大学 材料与能源学院, 广东 广州 510006
- 折叠
摘要
基于铜基体铬合金化的策略,研究了铬含量对二硫化钼/铜复合材料在氮气气氛下摩擦学性能的影响.结果表明,在复合材料中加入1.5wt%铬,摩擦系数低至0.07,磨损率为2.4×10-4 mm3·N-1·m-1,分别是未添加铬的复合材料的64%和20%.通过透射电镜、X射线光电子能谱、扫描电镜分别对二硫化钼/铜界面结构、摩擦层成分及磨痕亚表层形貌进行了详细的分析,揭示了铜基体铬合金化对二硫化钼/铜复合材料摩擦学性能的作用机制.
Abstract
Based on the strategy of chromium alloying of copper matrix,the effect of chromium content on the tribological properties of molybdenum disulfide/copper composites in nitrogen atmosphere was studied.The results indicate that,1.5wt%chromium is added to the composite,with a friction coefficient as low as 0.07 and the specific wear rate is 2.4×10-4 mm3·N-1·m-1,which is only 64%and 20%of the composite without chromium,respectively.The interface structure,the friction layer composition and the grinding subsurface morphology are analyzed by TEM,X-ray optoelectronic energy spectrum and SEM respectively,and the mechanism of action of molybdenum/copper composite is revealed.
关键词
铜基复合材料/合金化/二硫化钼/摩擦学性能Key words
copper matrix composite/alloying/molybdenum disulfide/tribological properties引用本文复制引用
基金项目
广州市科技计划(201904010406)
出版年
2024