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Corrosion behaviors of low‐temperature plasma nickelized coatings on titanium alloy
Author(s) -
Fu T.L.,
Zhan Z.L.,
Zhang L.,
Yang Y.R.,
Liu Z.,
Liu J.X.
Publication year - 2016
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.201609052
Subject(s) - materials science , corrosion , dielectric spectroscopy , coating , nickel titanium , x ray photoelectron spectroscopy , titanium , metallurgy , oxide , alloy , polarization (electrochemistry) , titanium alloy , high temperature corrosion , electrochemistry , chemical engineering , composite material , shape memory alloy , chemistry , electrode , engineering
A Ni coating was prepared on a titanium alloy by plasma nickelizing, at a low temperature of 450 °C, after a surface mechanical attrition treatment. This coating consisted of Ni 3 Ti and NiTi phases. Polarization curves, open circuit potential, and electrochemical impedance spectroscopy measurements were used to evaluate the corrosion behavior of the coatings. These measurements revealed the improved corrosion behavior of the samples after the nickelized SMAT Ti process. The oxide films formed on the coating were characterized via X‐ray photoelectron spectroscopy. The complex titanium and nickel oxides provided excellent corrosion resistance to the 3.5% NaCl solution.