收稿日期: 2017-01-11
网络出版日期: 2018-12-26
基金资助
国家重点研发计划政府间国际科技创新合作重点专项资助项目(2016YFE0111200)
Tribology properties of C/C composites under different conditions
Received date: 2017-01-11
Online published: 2018-12-26
利用MM-W1型立式万能摩擦磨损试验机测试C/C复合材料在不同 载荷(0.5, 1.0, 1.5 MPa)及不同润滑(干态、水润滑、油润滑)条件下的摩擦磨损性能, 借助扫描电子显微镜对不同状态下的磨损表面形貌进行观察分析. 结果表明: 摩擦系数均随摩擦时间的增加而增大至一定范围内保持稳定; 随着载荷的增大, 干态条件下的摩擦系数不断减小; 相同载荷下, 干态摩擦试样的摩擦系数最大, 磨损率最小; 干态条件下能形成完整、光滑的磨屑膜, 有效隔离了材料与对磨销之间的接触, 降低了磨损率; 油润滑和水润滑条件下形成的液态膜具有润滑作用, 降低了摩擦系数, 但不利于磨屑膜的形成, 导致磨损率较大.
符宏山, 杨敏, 任慕苏, 李红, 张家宝, 韦习成, 孙晋良 . 不同试验条件下 C/C 复合材料的摩擦磨损性能[J]. 上海大学学报(自然科学版), 2018 , 24(6) : 947 -954 . DOI: 10.12066/j.issn.1007-2861.1881
Tribology properties of C/C composites under different load and condition were tested by MM-W1 vertical universal friction and wear tester. The surface microstructure after tests were observed with scanning electron microscopy (SEM). The results show that all friction coefficients under dry, water and oil conditions gradually increased with time, and then remains stable. The friction coefficient decreases with the increasing load under a dry condition. The friction coefficient reaches maximum and the mass lose reaches minimum under a dry condition with the same load. A complete and smooth wear debris film is formed under a dry condition, effectively reducing contact between the C/C composites and friction parts, leading to a decreased wear rate. The lubricating film in the water and oil situation reduces the friction coefficient, but hinders the formation of wear debris film, resulting in an increased wear rate.
Key words： C/C composites; tribology property; wear debris film; lubricate; wear rate
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