引用本文:朱禄发，龙剑平，刘二勇，王祥，曾志翔，乌学东.等离子喷涂Al2O3-13%TiO2涂层的海水腐蚀磨损性能[J].中国表面工程,2015,28(6):96~103
ZHU Lufa, LONG Jianping, LIU Eryong, WANG Xiang, ZENG ZhiXiang, WU Xuedong.Tribocorrosion Behavior of Plasma Sprayed Al2O3-13%TiO2 Coatings in Seawater[J].China Surface Engineering,2015,28(6):96~103
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等离子喷涂Al2O3-13%TiO2涂层的海水腐蚀磨损性能
朱禄发，龙剑平，刘二勇，王祥，曾志翔，乌学东1,2
1. 成都理工大学 材料与化学化工学院;2. 中国科学院宁波材料技术与工程研究所
摘要:
基于等离子喷涂技术构筑了高耐磨、耐蚀的Al2O313%TiO2涂层（AT13涂层），利用Rtec磨蚀试验机研究AT13涂层在干摩擦、去离子水和人工海水介质中的摩擦磨损性能，并利用电化学工作站分析了涂层在静态腐蚀和滑动磨损中的开路电位和极化曲线的变化，探讨了AT13涂层的腐蚀磨损机理。结果表明：热喷涂AT13涂层由αAl2O3、γAl2O3、金红石型TiO2和Al2TiO5相组成，其中富Ti相呈条带状分布于富Al基体中；AT13涂层在海水工况具有较好的润滑性，与干摩擦相比，其摩擦因数减小了0.15，且具有较好的稳定性；在3种工况下，AT13涂层都具有优异的耐磨损性能，海水润滑条件下，AT13涂层具有最小的磨损率，且随载荷的增加而减小；磨损过程加重了海水对涂层的腐蚀，但影响较小。
关键词:  等离子喷涂  Al2O313%TiO2涂层  腐蚀磨损行为  微观结构
DOI：10.11933/j.issn.1007-9289.2015.06.013
分类号:
基金项目:
Tribocorrosion Behavior of Plasma Sprayed Al2O3-13%TiO2 Coatings in Seawater
ZHU Lufa, LONG Jianping, LIU Eryong, WANG Xiang, ZENG ZhiXiang, WU Xuedong1,2
1.College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology;2. Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Science
Abstract:
Al2O313%TiO2 (AT13) coatings with high tribocorrosion resistance were prepared by plasma spraying method. The tribological properties of Al2O313%TiO2 coatings under dry sliding, deionized water and artificial seawater conditions were carried out using an Rtec tribometer. The open circuit voltage and polarization curve of the coatings were investigated with electrochemical workstation under static corrosion state and sliding wear condition, and the tribocorrosion mechanism of AT13 coating was also discussed. The results show that the thermal spraying AT13 coatings consists of αAl2O3, γAl2O3, rutileTiO2 and Al2TiO5 , and the richTi phases are distributed in the richAl phases. AT13 coatings have good lubrication under artificial seawater conditions, and its friction coefficient decreases 0.15 compared with those under dry sliding and has a good stability. The AT13 coatings have excellent wear resistant under different conditions. AT13 coating has minimal wear rate which decreases with increasing loads under seawater conditions. The wear process enhanced the corrosion behavior of AT13 coatings.
Key words:  plasma spraying  Al2O313%TiO2 coatings  tribocorrosion behavior  microstructure
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