无机材料学报2017，Vol.32Issue(10)：1102-1108,7.DOI:10.15541/jim20170006
TC4合金表面Zr增效硅化物涂层的组织及高温摩擦磨损性能
Structure and High-temperature Wear Behavior of Zr Modified Silicide Coatings Prepared on TC4 Alloy
摘要
Abstract
Zr modified silicide coatings were prepared on TC4 alloy by Si-Zr co-deposition, the wear behavior of the coatings were investigated at 600℃, and the wear mechanisms were discussed. The results show that the obt-ained coating has a multi-layer structure, consisting of a (Ti, X)Si2(X represents Zr, Al and V elements) outer layer, a TiSi middle layer and an inner layer composed of a mixture of Ti5Si4+Ti5Si3. Addition of Zr in the pack mixtures can reduce the residual stress in the coating by lowering the coating growth rate, leading to a more compact coating structure. The micro-hardness of the coating is obviously higher than that of TC4 alloy, which shows a decrease tendency from the coating surface to its substrate. The high temperature wear tests reveal that the Zr modified silicide coating can offer effective protection for TC4 alloy at high temperatures. When using GCr15 ball as the counterpart, very slight wear occurred on the worn surface of the coating, and the main wear manners should be the transfers of GCr15 to the coating surface besides a certain extent of oxidation wear. Sliding against Al2O3ball, the main wear mechanisms of the coating are considered to be plough wear, fatigue wear, adhesive wear, and oxidation wear.关键词
TC4合金/硅化物涂层/Zr增效/组织结构/高温磨损/磨损机制Key words
TC4 alloy/silicide coating/Zr modification/coating structure/high-temperature wear/wear mechanisms分类
化学化工引用本文复制引用
李轩,田进,田伟,谢文玲,李秀兰..TC4合金表面Zr增效硅化物涂层的组织及高温摩擦磨损性能[J].无机材料学报,2017,32(10):1102-1108,7.基金项目
国家自然科学基金(51301115) （51301115）
材料腐蚀与防护四川省重点实验开放课题(2016CL18) （2016CL18）
四川理工学院人才引进项目(2016RCL22) （2016RCL22）
四川省教育厅重点项目(17EA0268) National Natural Science Foundation of China (51301115) （17EA0268）
Open Fund of Material Corrosion and Protection Key Laboratory of Sichuan Province (2016CL18) （2016CL18）
Programme of Talent Introduction Project of Sichuan University of Science and Engineering (2016RCL22) （2016RCL22）
Key Fund Project of Sichuan Provincial Department of Education (17EA0268) （17EA0268）
