Influence of Cr addition on microstructure evolution and corrosion behavior of the Ti-Zr alloys

被引：24
作者：
Xia, Chaoqun [1 ,2 ,3 ,4 ]
Song, Laiang [1 ]
Liu, Shuguang [3 ,5 ]
Chen, Bohan [3 ]
Yang, Tai [1 ,4 ]
Liu, Di [2 ]
Yang, Yudong [2 ]
Wang, Yanqing [2 ]
Li, Qiang [1 ,4 ]
机构：
[1] Hebei Univ Technol, Sch Mat Sci & Engn, Res Inst Energy Equipment Mat, Tianjin 300130, Peoples R China
[2] Sinosteel Xingtai Machinery & Mill Roll Co Ltd, State Key Lab Roll Composite Mat, Xingtai 054025, Peoples R China
[3] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China
[4] Hebei Univ Technol, Tianjin Key Lab Mat Laminating Fabricat & Interfa, Tianjin 300130, Peoples R China
[5] Beijing Chunlizhengda Med Instrucments Co Ltd, Beijing 101100, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2021年 / 174卷
基金：
中国国家自然科学基金;
关键词：
Titanium; Zirconium; Microstructure; Corrosion resistance; Passivation film; MECHANICAL-PROPERTIES; ELECTROCHEMICAL-BEHAVIOR; TENSILE PROPERTIES; TI-6AL-4V ALLOYS; TITANIUM-ALLOYS; IMPLANT ALLOY; HIGH-STRENGTH; RESISTANCE; ZIRCONIUM; SURFACE;
D O I：
10.1016/j.matchar.2021.111045
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure and corrosion behavior of novel Ti-Zr-Cr alloys were investigated. All Ti-Zr-Cr alloys were consisted of ? and (TiZr)Cr-2 phase, and the results of EDS indicated that a certain amount of Ti were dissolved in ZrCr2 phase. The detailed XPS analysis were conducted to investigate the chemical composition of the passive film, and revealing the existence of protective TiO2, ZrO2 and Cr2O3 as well as a tiny amount of and Ti(OH)(4), Zr (OH)(4) and Cr(OH)(3). The results of AFM and contact angle test indicated that the roughness and hydrophilicity of the surface of the examined Ti-Zr-Cr alloys decreases with the addition of Cr. Potentiodynamic polarization and EIS analysis indicated that the addition of Cr enhanced the corrosion resistance owing to the formation of protective passivation film. The semi-conductive properties of the passive film were evaluated by means of Mott Schottky curves, and the result showed that the passive film was tend to be more dense and less defective with the increasing content of Cr. The results of the present study suggest that the addition of Cr may be one of extremely effective ways to enhance the corrosion resistance of the Ti50Zr50 alloy.
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页数：15
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