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| 纯滚动状态下的氮化硅球的滚动接触疲劳 | |
| 引用本文： | ZHOU Jing-ling,吴国庆,CHEN Xiao-yang,张培志.纯滚动状态下的氮化硅球的滚动接触疲劳[J].上海大学学报(英文版),2008,12(4):358-362. |
| 作者姓名： | ZHOU Jing-ling 吴国庆 CHEN Xiao-yang 张培志 |
| 摘 要： | |
| 关 键 词： | 纯滚动状态 氮化硅球 滚动接触疲劳 机电工程 |
| 收稿时间： | 2006-11-17 |
| 修稿时间： | 2007-01-08 |
Rolling contact fatigue of silicon nitride bearing balls under pure rolling condition |
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| ZHOU Jing-ling,WU Guo-qing,CHEN Xiao-yang,ZHANG Pei-zhi.Rolling contact fatigue of silicon nitride bearing balls under pure rolling condition[J].Journal of Shanghai University(English Edition),2008,12(4):358-362. | |
| Authors: | ZHOU Jing-ling WU Guo-qing CHEN Xiao-yang ZHANG Pei-zhi |
| Institution: | 1. College of Mechanical Engineering, Nantong University, Nantong 226007, P. R. China;Research Institute of Bearings, Shanghai University, Shanghai 200072, P. R. China 2. College of Mechanical Engineering, Nantong University, Nantong 226007, P. R. China 3. Research Institute of Bearings, Shanghai University, Shanghai 200072, P. R. China 4. Shanghai Institute of Materials, Shanghai 200437, P. R. China |
| Abstract: | A newly developed pure rolling fatigue test rig with three contact points for bearing balls was used to perform rolling contact fatigue (RCF) tests. The fatigue properties of GCr15 steel balls and two kinds of Si3N4 ceramic balls (GSN-200 and NBD-200) produced with different technologies were compared. Ball surfaces were examined after failure with optical microscope and scanning electron microscope (SEM). It was identified by tests that the failure mode of ceramic balls was surface spall. The main factor of ceramic ball failure was principal tensile stress. Life tests data, summarized in accordance with the Weibull theory, showed that the life of GSN-200 balls was close to that of GCr15 balls, whereas the life of NBD-200balls was much longer than those of GSN-200 and GCr15. Under the same working condition, the temperature rise of all ceramic balls was lower than that of steel balls, and their crack propagation rates were slower than that of steel balls. |
| Keywords: | a ceramic ball pure rolling contact fatigue life |
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