Dynamic evolution of oxide film on selective laser melted Ti-6Al-4V alloy

被引：12
|
作者：
Zhang, Yifei [1 ,2 ]
Li, Jianzhong [1 ,2 ]
Xu, Haoyuan [1 ,2 ]
Feng, Limin [1 ,2 ]
Zhang, Tao [1 ,2 ]
机构：
[1] Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
[2] Northeastern Univ, Liaoning Key Lab Met Sensors & Technol, Shenyang 110819, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2020年 / 849卷
基金：
中国国家自然科学基金;
关键词：
Ti-6Al-4V alloy; Oxide film; Film evolution; Corrosion resistance; MOTT-SCHOTTKY ANALYSIS; CORROSION-RESISTANCE; STAINLESS-STEEL; ELECTROCHEMICAL CHARACTERIZATION; MECHANICAL-PROPERTIES; TITANIUM-ALLOYS; PURE TITANIUM; BEHAVIOR; MICROSTRUCTURE; SURFACE;
D O I：
10.1016/j.jallcom.2020.156622
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The oxide film growth on Ti-6Al-4V alloy is a dynamic process due to the coexisting and competing dissolution of oxides, which significantly affects the corrosion and applications of Ti-6Al-4V alloys. In this paper, the components and semiconductor characteristics of the oxide films on the surface of the selective laser melted (SLM) Ti-6Al-4V alloys were analyzed. The growth and evolution mechanism of the oxide films were proposed. From electrochemical analysis, the SLM-produced Ti-6Al-4V was more resistant to corrosion in course of the seawater immersion than the wrought Ti-6Al-4V, and the two tested alloys showed difference in performance with immersion time increasing. A film resistance increase was observed in the SLM-produced alloy, indicating the formation of a TiO2 barrier layer. (C) 2020 Elsevier B.V. All rights reserved.
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页数：10
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