摘要
以Al2O3、Al2O3/TiC与Al2O3/(W,Ti)C陶瓷刀具材料作为研究对象,在高速环-块摩擦磨损试验机上研究3种陶瓷刀具材料在相同试验条件下的摩擦磨损性能,并利用ANSYS有限元软件分析计算磨损时的应力分布。结果表明:3种陶瓷的摩擦磨损性能与其在Al2O3基体中的添加成分有关。3种陶瓷在高速下的耐磨性优于低速,磨损率随着摩擦速度的增大而呈下降趋势,随载荷的增大而呈上升趋势,其中Al2O3/(W,Ti)C陶瓷刀具的耐磨性最优,其耐磨性能主要与力学机械性能有关。通过有限元分析可知,3种陶瓷的最大剪应力大于最大主应力,在剪应力作用下,更容易发生磨粒磨损。
Three kinds of Al2O3-based ceramic tool materials composed of different additives such as TiC and （W, Ti）C were investigated on the high speed ring-block wear tester. The stress distribution during friction and wear process was cal- culated by ANSYS. It is found that different additives have a profound effect on the wear resistance of the Al2O3 -based ce- ramic materials. The wear rate of the Al2O3-based ceramic materials increases with the increase of load, and decreases with the increase of speed. Al2O3/（ W, Ti）C has the best antiwear performance, due to its best mechanical properties. The re- sults of stress analysis by ANSYS show that the shear stress is bigger than principal stress and that makes abrasive wear easily.
出处
《润滑与密封》
CAS
CSCD
北大核心
2009年第5期31-33,37,共4页
Lubrication Engineering
基金
青岛科技大学科研启动基金资助项目
关键词
陶瓷刀具
摩擦磨损性能
应力分析
ceramic cutting tool
friction and wear behavior
stress analysis
