Electrochemical behaviour of passive film formed on the surface of Ti-6Al-4V alloys fabricated by electron beam melting

被引：185
作者：
Gai, Xin [1 ,2 ]
Bai, Yun [1 ]
Li, Ji [3 ]
Li, Shujun [1 ]
Hou, Wentao [1 ]
Hao, Yulin [1 ]
Zhang, Xing [1 ]
Yang, Rui [1 ]
Misra, R. D. K. [4 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China
[3] Xian Thermal Power Res Inst Co Ltd, Xian 710032, Shaanxi, Peoples R China
[4] Univ Texas El Paso, Dept Met Mat & Biomed Engn, 500W Univ Ave, El Paso, TX 79968 USA
来源：
CORROSION SCIENCE | 2018年 / 145卷
基金：
中国国家自然科学基金;
关键词：
Titanium; Electron beam melting; Passive film; Corrosion resistance; ANODIC-OXIDE-FILMS; CORROSION-RESISTANCE; MANUFACTURED TI-6AL-4V; TITANIUM-ALLOYS; TI; LASER; MICROSTRUCTURE; PHOSPHATE; PROPERTY; WROUGHT;
D O I：
10.1016/j.corsci.2018.09.010
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure, composition, semiconductive properties and electrochemical performance of passive film formed on the surface of Ti-6Al-4 V alloy produced by electron beam melting (Abbreviated as ET) were compared with conventional wrought counterpart (WT) in phosphate buffered saline at 37 degrees C. The results demonstrated a thinner and more compact passive film formed on ET, which was attributed to the small grain size and high density of grain boundaries in ET, these active sites increased the growth rate at the initial stage in the manner of 3D progressive nucleation mechanism of passive film, leading to superior corrosion resistance than WT.
引用
收藏
页码：80 / 89
页数：10
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