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

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

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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 (TiNx) 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.

Zr-4 alloymagnetron sputteringTiN coatinghigh temperature oxidation resistancecorrosion resistance

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

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School of Mechanical Engineering, University of South China, Hengyang 421001, P.R.China

School of Electrical Engineering, University of South China, Hengyang 421001, P.R.China

State Power Investment Corporation Science and Technology Research Institute, Beijing 102209, P.R.China

Funded by the National Science and Technology Major Project of the Ministry of Science and Technology of ChinaPostgraduate Research and Innovation Project of the University of South China

2015ZX06004001-0022017XCX11

2018

10.11835/j.issn.1671-8224.2018.01.02

重庆大学学报(英文版)
重庆大学

重庆大学学报(英文版)

影响因子：0.02
ISSN：1671-8224
年,卷(期)：2018.17(1)
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