Electrochemical degradation of the hydrogen-absorption-induced passive film on an Ni-Ti superelastic alloy in an NaCl solution

被引：1

作者：

Rho, Seo-Young ^{[1
,2
]}

Lee, Jun-Seob ^{[1
,2
,5
]}

Ando, Kuga ^{[3
]}

Zhu, Hengjie ^{[1
,2
]}

Baek, Seung-Hoon ^{[4
]}

Kim, Jae Deok ^{[4
]}

Park, Jungjae ^{[4
]}

Kang, Sung ^{[4
]}

Yokoyama, Ken'ichi ^{[3
]}

机构：

[1] Changwon Natl Univ, Sch Mat Sci & Engn, 51140 Changwondaehak Ro, Chang Won 51140, South Korea

[2] Changwon Natl Univ, Dept Mat Convergence & Syst Engn, 51140 Changwondaehak Ro, Chang Won 51140, South Korea

[3] Kyushu Inst Technol, Dept Mat Sci & Engn, 1-1 Sensui Cho, Kitakyushu 8048550, Japan

[4] Res Inst Ind Sci & Technol, Cheongam Ro, Pohang 37673, South Korea

[5] Changwon Natl Univ, Sch Mat Sci & Engn, 20 Changwondaehak Ro, Chang Won 51140, South Korea

来源：

ELECTROCHIMICA ACTA | 2024年 / 484卷

关键词：

Ni-Ti alloy; Passivity; Hydrogen; XPS; STEM; LOCALIZED CORROSION; MARTENSITE-TRANSFORMATION; STAINLESS-STEELS; TITANIUM; BEHAVIOR; OXIDATION; ION; XPS; EMBRITTLEMENT; RESISTANCE;

D O I：

10.1016/j.electacta.2024.144022

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

This study was conducted to investigate the effects of electrochemically generated hydrogen on the passivation behaviour of Ni-Ti alloy surfaces. Hydrogen charging via galvanostatic polarisation increased the passive current density during cyclic potentiodynamic polarisation experiments. Electrochemical impedance spectroscopy and Mott-Schottky analyses revealed an increase in the electrochemical conductivity of the film, indicating that hydrogen charging increased the donor density. Changes in the compositions were detected by Auger electron spectroscopy and X-ray photoelectron spectroscopy. Scanning transmission electron microscopy revealed film degradation after hydrogen charging. These results demonstrate that the electrochemical conductivity of the passive film increased owing to hydrogen absorption.

引用

页数：11

共 57 条

[1] Electrochemical hydrogen permeation tests under galvanostatic hydrogen charging conditions conventionally used for hydrogen embrittlement study [J].