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Affiliation of Author(s):材料科学与技术学院

Title of Paper:Plasma surface tantalum alloying on titanium and its corrosion behavior in sulfuric acid and hydrochloric acid

Journal:APPLIED SURFACE SCIENCE

Key Words:Plasma surface alloying technology Ti-Ta alloy coating Anti-corrosion property Titanium

Abstract:An anti-corrosion Ti-Ta alloy coating was prepared on pure titanium surface by double glow plasma surface alloying technology. Electrochemical corrosion test was applied to test the anti-corrosion property of Ti-Ta alloy layer. The microstructure and the phase composition of Ti-Ta alloy coating were detected before and after corrosion process by means of scanning electron microscope (SEM), X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS). The results showed that the Ta-Ti alloy layer has a thickness of about 13-15 mu m, which is very dense without obvious defects such as pores or cracks. The alloy layer is composed mainly of beta-Ta and alpha-Ti. The Ta alloy layer improves the anti-corrosion property of pure titanium. A denser and more durable TiO2 formed on the surface Ta-Ti alloy layer after immersing in strong corrosive media may account for the excellent corrosion resistant. (C) 2018 Elsevier B.V. All rights reserved.

ISSN No.:0169-4332

Translation or Not:no

Date of Publication:2018-05-31

Co-author:陈小虎,Zhang Pingze,丁丰,李逢昆,Yao Zhengjun

Correspondence Author:Wei Dongbo