氮化硅陶瓷球显微结构与滚动接触疲劳性能  

Microstructure and Rolling Contact Fatigue Performance of Silicon Nitride Ceramic Balls

作　　者：周井玲[1] 吴国庆[1] 陈晓阳[2] 张培志[3] 郭方全[3] 

机构地区：[1]南通大学,江苏南通226007 [2]上海大学,上海200072 [3]上海材料研究所,上海200437

出　　处：《润滑与密封》2007年第3期139-141,155,共4页Lubrication Engineering

基　　金：江苏省教育厅自然科学基金项目(05KJB460106);上海市科技发展基金重点项目(0152nm031);南通市青年学术带头人带课题进修计划项目(Z5005);南通大学自然科学基金项目(06Z032)

摘　　要：利用扫描电子显微技术分析了4种氮化硅陶瓷球的显微结构,用新研制的三点接触纯滚动加速疲劳试验机,试验研究了4种陶瓷球的接触疲劳性能,并对疲劳球表面进行了显微观察。研究表明,相同试验工况下,不同的显微结构,其韧性、强度、寿命和温升明显不同。细小致密的等轴状晶粒、玻璃相少的陶瓷球的滚动接触疲劳性能优于长针状晶粒、玻璃相多的陶瓷球。Microstructures py. A newly developed pure of four kinds of silicon nitride ceramic balls were rolling fatigue test rig with three contact points for analyzed bearing with scanning electron microscoballs was used to perform rolling contact fatigue （RCF） tests. The fatigue properties of four kinds of Silicon Nitride ceramic balls produced with different technologies were compared. Ball surfaces were examined with scanning electron microscopy after failure. It is shown by test that toughness ,intensity, fatigue life and temperature rise of four kinds of bails are different due to different microstructures under the same test condition. The rolling contact fatigue performance of ceramic balls with fine compact equal-axis grain and fewer glass phase exceeds that of those with slightness-needle grain and more glass phase.

关 键 词：氮化硅 陶瓷球 显微结构 滚动接触疲劳 

分 类 号：TH117.1[机械工程—机械设计及理论]