纳米掺杂对Al2O3＋13wt％TiO2等离子喷涂涂层组织结构及抗磨损性能的影响研究  

The effect of doped nanoparticles on microstructural and wear resistant of the plasma spraying Al2O3＋13wt%TiO2 coatings

作　　者：王戎[1,2] 李春福[1] 宋开红[1] 单春艳[1] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [2]中国石油大学化学化工学院,北京102200

出　　处：《功能材料》2007年第A10期3875-3879,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目（50372054）

摘　　要：采用纳米掺杂方法制备纳米包覆微米级粒子的AT-13等离子喷涂粉末，并利用大气等离子喷涂技术制备出含有纳米复相结构的陶瓷涂层。采用常温干摩擦试验评价纳米复相结构涂层的耐磨损性能，并利用扫描电镜（SEM）观察磨损后的磨痕形貌。结果表明，纳米复相涂层的耐磨损性能明显好于传统陶瓷涂层，且磨损载荷高于400N后，纳米复相涂层磨损机制和传统涂层的不同，传统涂层的磨损主要是涂层的微裂纹产生和颗粒的剥落，而相同条件下纳米复相涂层，主要表现为涂层的粘着磨损与局部剥落。Nanometer encasing micron-sized particle of AT-13 plasma spraying powder was prepared by nanometer doping method, and nanometer complex phase structural of ceramic coating was made by using atmosphere plasma spraying technology. The wearability of the coating was evaluated after operating dry friction test at room temperature, and wear pattern was analyzed using SEM. The results showed that the wearability of nanometer complex phase coating excelled normal ceramic coating, and abrasion mechanism of nanometer complex phase coating was different from that of normal coating when the load was over 400N. Normal coating prirnarily was wearied through coming out micro-cracks on the surface of coating and granulometric flaking, whereas on the same conditions, the nanometer complex phase coating mostly wearied though adhesive wear and part flake.

关 键 词：纳米掺杂 等离子喷涂 抗磨损性能 

分 类 号：TF123.144[冶金工程—粉末冶金]