Corrosion properties of TiN prepared by laser gas alloying of Ti and Ti6Al4V

被引：88

作者：

Garcia, I ^{[1
]}

De Damborenea, JJ ^{[1
]}

机构：

[1] CSIC, CENIM, Dept Corros & Protect, E-28040 Madrid, Spain

来源：

CORROSION SCIENCE | 1998年 / 40卷 / 08期

关键词：

laser alloying; titanium nitride; coatings; EIS; polarization;

D O I：

10.1016/S0010-938X(98)00046-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

TiN coatings were prepared by laser surface alloying of commercially pure (c.p.) Ti and Ti6A14V alloy in a nitrogen atmosphere. Surface gas alloying was carried out using a 5kW Spectra-Physics transverse flow CO2 laser operating in TEM 20 at a scan rate of 0.3 m/min and an input flow of 30 l/min. After laser gas alloying, surface tracks of a light gold colour could be seen by the naked eye. The microstructure of the Ti alloy revealed a surface layer of TiN dendrites in a nitrogen-enriched alpha matrix covering the melted surface. The corrosion properties of the material are discussed through the results of anodic polarization test and electrochemical impedance spectroscopy in HCl solution. An improvement in corrosion behaviour, associated with the presence of a good TiN coating, was observed. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：1411 / 1419

页数：9

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