Microstructure and corrosion resistance of sputtered TiN coatings on surface of Zr-4 alloy

作     者：LIAO Bang-liang MA Jian-guang ZHU Wei-hua ZHU Hong-mei YANG Kai LIU Yan-hong LI Huai-lin WANG Xiao-jing WANG Xin-lin 廖帮亮;ma jian-guang;zhu wei-hua;zhu hong-mei;yang kai;liu yan-hong;li huai-lin;wang xiao-jing;王新林

作者机构：school of mechanical engineeringuniversity of south chinaHengyang 421001P.R China school of electrical engineeringuniversity of south chinaHengyang 421001P.R China state power investment corporation science and technology research instituteBeijing 102209PR.China 

出 版 物：《Journal of Chongqing University》 (重庆大学学报（英文版）)

年 卷 期：2018年第17卷第1期

页      面：17-26页

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Funded by the National Science and Technology Major Project of the Ministry of Science and Technology of China(2015ZX06004001-002) the Postgraduate Research and Innovation Project of the University of South China(2017XCX11) 

主　　题：Zr-4 alloy magnetron sputtering TiN coating high temperature oxidation resistance corrosion resistance 

摘      要：To improve the oxidation resistance and corrosion resistance of Zr-4 alloy, titanium nitride （TIN） coatings were prepared on the Zr-4 alloy with a TiN ceramic target with different ratios of N2. Microstructure and high-temperature properties of the TiN coated samples were studied by scanning electron microscopy （SEM）, energy dispersive spectrometer （EDS）, X-ray diffraction meter （XRD）, X-ray photoelectron spectroscopy （XPS）, heat treatment furnace and autoclaves, respectively. The x value of the TiN coatings （TiN） ranges from 0.96 to 1.33. After the introduction of N2, TiN coating exhibits a weak （200） plane and a preferred （111） orientation. The coating prepared with an N2 flow ratio of 15% shows an optimal oxidation resistance in the atmospheric environment at 800 ℃. In either 1 200 ℃ steam environment for one hour, or deionized water at 360 ℃ and a pressure of 18.6 Mpa for 16 d, the opitimized TiN coated samples have no delamination or spallation; and the gains in the masses of samples are much smaller than Zr-4 alloy. These results demonstrate the effectiveness of the optimized TiN coating as the protective coating on the Zr-4 alloy under extreme conditons.