Improving corrosion resistance of Ti-6Al-4V alloy through plasma-assisted PVD deposited nitride coatings

被引：116

作者：

Oliveira, V. M. C. A. ^{[1
]}

Aguiar, C. ^{[1
]}

Vazquez, A. M. ^{[1
]}

Robin, A. ^{[1
]}

Barboza, M. J. R. ^{[1
]}

机构：

[1] Univ Sao Paulo, Escola Engn Lorena, Lorena, SP, Brazil

来源：

CORROSION SCIENCE | 2014年 / 88卷

基金：

巴西圣保罗研究基金会;

关键词：

Titanium; EIS; Polarization; Acid corrosion; Passivity; Potential parameters; ELECTROCHEMICAL CORROSION; MECHANICAL-PROPERTIES; TIALN COATINGS; TIN; BEHAVIOR; TITANIUM; CRN; MULTILAYER; STEEL; MICROSTRUCTURE;

D O I：

10.1016/j.corsci.2014.07.047

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

TiN and TiAlN/TiAlCrN were deposited on the alloy Ti-6Al-4V by means of plasma-assisted PVD technique in order to improve its corrosion resistance in a 2 M HCI solution at 25, 60, and 80 degrees C. The corrosion behaviour was investigated using open-circuit potential vs. time measurements, potentiodynamic polarization and electrochemical impedance spectroscopy. The uncoated Ti-6Al-4V alloy demonstrated an active behaviour with an active-passive transition in the HCI solution. The TiN and TiAlN/TiAlCrN coated Ti-6Al-4V alloy presented a passive behaviour. The corrosion resistance of the coated alloy was superior, which was evidenced by lower corrosion current densities and higher impedance values. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：317 / 327

页数：11

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