Electrochemical corrosion behavior of Ti–35Nb–7Zr–5Ta powder metallurgic alloys after Hot Isostatic Process in fluorinated artificial saliva

The present study aimed to evaluate the effect of the Hot Isostatic Process (HIP) process on the microstructure, phase stability and corrosion resistance of Ti35Nb7Zr5Ta powder metallurgy alloys. The corrosion resistance of titanium alloys was tested by analyzing the open circuit potential (OCP), po...

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Published in:Journal of materials research and technology 2022-01, Vol.16, p.1435-1444
Main Authors: Lario, Joan, Vicente Escuder, Ángel, Segovia, Francisco, Amigó, Vicente
Format: Article
Language:English
Subjects:
EIS
Fusayama
HIP
Ion release
OCP
Powder metallurgy
β-Type titanium alloy
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Amigó, Vicente
description The present study aimed to evaluate the effect of the Hot Isostatic Process (HIP) process on the microstructure, phase stability and corrosion resistance of Ti35Nb7Zr5Ta powder metallurgy alloys. The corrosion resistance of titanium alloys was tested by analyzing the open circuit potential (OCP), potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and ion release in physiological Fusayama solution. Polarization curves showed that the Ti–35Nb–7Zr–2Ta alloy presented good passivation behavior thanks to its low current densities (106 Ω cm2) at low frequencies and phase angles close to −90° according to the EIS results with less ion release.
doi_str_mv 10.1016/j.jmrt.2021.12.085
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subjects EIS
Fusayama
HIP
Ion release
OCP
Powder metallurgy
β-Type titanium alloy
title Electrochemical corrosion behavior of Ti–35Nb–7Zr–5Ta powder metallurgic alloys after Hot Isostatic Process in fluorinated artificial saliva
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