Ce-TZP-(Al_2O_3)陶瓷与Cr12钢的摩擦磨损行为

Friction and Wear Behaviours Between Ce-TZP-(Al_2O_3 ) Ceramics and Cr12 Steel

本文研究了Ce－TZP－（Al2O3）陶瓷在不同载荷（100～500N），不同介质环境（空气、水、醋酸、氨水）下与Cr12钢的摩擦磨损特性根据磨损前后摩擦副表面形貌特征与相成份变化，分析了氧化锆陶瓷的磨损机理．100N时，干摩擦摩擦系数与磨损率较高，此时磨损机理以磨粒磨损为主，在液体介质中摩擦系数与磨损率都较低，磨损机理以分层剥落为主；200N以上时，陶瓷摩擦面上发生马氏体相变，磨损机理以脆性断裂为主．摩擦系数随载荷增加而降低，磨损率与载荷呈线性增加关系．

Friction and wear characteristics of Ce--TZP-(Al2O3 ) against Cr12 steel under the loads of100-500N were studied in different environments (air, water, acetic acid, ammonia solution).The wear mechanisms of zirconia ceramics were analyzed based on the morphology and phasecomposition of all worn surfaces. Under the load of 100N, the high friction coefficient and wearrate were measured and the main wear mechanism was abrasive wear in air; whereaas in liquid,the friction coefficient and wear rate were all low, and delamination became dominant. Under theload of above 200N, Mart,ensitic transformation occurred on the worn surfaces, and brittle fractureprocessing was the controlling mechanism. The friction coefficient decreased while the wear rateincreased with increasing load.