Formation and Evolution of Tribo-layer on Al2O3 and Al2O3-Based Ceramics in Sliding Against Si3N4 under Dry Sliding

摘要：

　　Alumina (Al2O3) and Al2O3-based ceramics are candidate wear-resistant materials for many applications.In the past decades,the friction and wear behaviors of Al2O3 and Al2O3-based ceramics in dry sliding and lubricated conditions have been extensively investigated.In dry sliding,surface modification of Al2O3 and Al2O3-based ceramics at tribo-interface can be observed.In other words,the original surfaces of Al2O3 and Al2O3-based ceramics can be modified by friction and friction-induced material interaction (fracture,mechanical mixing,tribo-sintering) at the tribointerface,and hence give birth to a tribo-layer.The formation and evolution of the tribo-layer on the worn surfaces of Al2O3 and Al2O3-based ceramics are the keys to understand the friction and wear behaviors of Al2O3 and Al2O3-based ceramics.This is conducted by scanning electron microscopy (SEM) observation and classification of the morphology and composition of the worn surfaces of Al2O3 and Al2O3-based ceramics at different sliding stages.The typical characteristics of the tribo-layers on the worn surfaces of Al2O3 and Al2O3-based ceramics in sliding against Si3N4 in a reciprocating motion are smooth surface with many interlinked cracks in morphology,mechanical mixing in chemical composition.The condition allowing the formation of the tribo-layer is briefly discussed.

关键词： Al2O3 Tribo-layer Evolution Formation

作者: Jian Shang Jinjun LU Junhu Meng Tao Wang

作者单位: State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of S State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of S

会议类型: 国际会议

会议名称: The Seventh China International Conference on High-Performance Ceramics (第七届先进陶瓷国际研讨会(CICC-7))

会议地点: 厦门

会议语种:英文

页码: 505-508

在线出版日期: 2011-11-04（万方平台首次上网日期，不代表论文的发表时间）