【摘要】 为研究水溶液的酸性对全陶瓷轴承磨损特性的影响,制备了氮化硅全陶瓷深沟球轴承,并改装设计一台酸性水溶液耐腐蚀轴承跑合仪,分别在水溶液和酸性溶液中进行轴承运转试验。使用TP-107轮廓仪对试验后轴承沟道形状进行对比,利用激光共聚焦显微镜(LSCM)、扫描电子显微镜(SEM)对轴承工作表面磨损形貌进行微观检查,并开展机理分析。结果表明:在酸溶液中运转,陶瓷轴承工作表面会产生动态腐蚀磨损,轴承轴向游隙增大率高达0.177μm/h,较纯水液中的磨损率增大10倍。更多还原

【Abstract】 In order to study effect of acidity of aqoeous solution on wear characteristics of all ceramic bearings, Si₃N₄ ceramic deep groove ball bearings are prepared, and a running-in instrument for corrosion-resistant bearings in acidic aqueous solution is modified and designed. The operation tests of the bearings in aqoeous solution and acidic solution are carried out respectively. The TP-107 profilometer is used to compare raceway shape of the bearings after test. The microscopic examination of wear morphology on working surface of the bearings is conducted by using laser scanning confocal microscopy（LSCM） and scanning electron microscopy（SEM）,and the mechanism analysis is carried out.The results show that when operation in acidic solution, the working surface of ceramic bearings produce dynamic corrosive wear. The increase rate of axial clearance of the bearings is as high as 0.177 μm/h, being 10 times higher than that in pure water.更多还原