| High-speed friction and wear behaviors of bulk Ti3SiC2 |
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| 作者姓名： | 黄振莺 翟洪祥 周韡 周洋 艾明星 张志力 李世波 |
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| 作者单位： | CenterofMaterialEngineering,BeijingJiaotongUniversity,Beijing100044,China |
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| 基金项目： | 国家高技术研究发展计划(863计划)，国家自然科学基金，北京交通大学校科研和教改项目 |
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| 摘 要： | High-speed friction and wear behaviors of bulk Ti3 SiC2 sliding drily against low carbon steel were investigated. Tests were carried out using a block-on-disk type tester with normal pressures ranging from 0.1 to 0.8 MPa and several sliding speeds from 20 to 60 m/s. The results show that, in the case of sliding speeds of 20 40 m/s, the friction coefficient exhibits a decreasing tendency with increasing the normal pressure after an increment in the smaller pressure range, and the worn quantity of Ti3SiC2 exhibits a nearly linear increase with increasing the normal pressure. However, when the sliding speed is up to 60 m/s, the friction coefficient exhibits a monotonous increase and the worn quantity exhibits a quadric increase with increasing the normal pressure. These speed-dependent and pressure-dependent behaviors are attributed to the antifriction effects of a frictionally generated oxide film covering the friction surface of Ti3 SiC2, and a balance between the generating rate and the removing (wearing) rate of the film.
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| 关 键 词： | 耐摩擦性 磨损性质 Ti3SiC2松散材料 氧化膜 |
High-speed friction and wear behaviors of bulk Ti3SiC2 |
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| HUANG Zhen-Ying,ZHAI Hong-xiang,ZHOU Wei,ZHOU Yang,AI Ming-xin,ZHANG Zhi-li,LI Shi-bo.High-speed friction and wear behaviors of bulk Ti3SiC2[J].Transactions of Nonferrous Metals Society of China,2005,15(2):266-269. |
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| Authors: | HUANG Zhen-Ying ZHAI Hong-xiang ZHOU Wei ZHOU Yang AI Ming-xin ZHANG Zhi-li LI Shi-bo |
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| Abstract: | High-speed friction and wear behaviors of bulk Ti3 SiC2 sliding drily against low carbon steel were investigated. Tests were carried out using a block-on-disk type tester with normal pressures ranging from 0.1 to 0.8 MPa and several sliding speeds from 20 to 60 m/s. The results show that, in the case of sliding speeds of 20 - 40 m/s, the friction coefficient exhibits a decreasing tendency with increasing the normal pressure after an increment in the smaller pressure range, and the worn quantity of Ti3SiC2 exhibits a nearly linear increase with increasing the normal pressure. However, when the sliding speed is up to 60 m/s, the friction coefficient exhibits a monotonous increase and the worn quantity exhibits a quadric increase with increasing the normal pressure. These speed-dependent and pressure-dependent behaviors are attributed to the antifriction effects of a frictionally generated oxide film covering the friction surface of Ti3SiC2, and a balance between the generating rate and the removing (wearing) rate of the film. |
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| Keywords: | Ti3 SiC2 tribological behavior oxide film antifriction effect sliding speed normal pressure |
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