Corrosion Behavior of a Nickel-Free High-Nitrogen Stainless Steel with Hydrogen Charging

Yanxin Qiao, Yipeng Chen, Linlin Li, Jian Chen, Wilfred Emori, Xiaojing Wang, Lanlan Yang, Huiling Zhou, Gang Song, Nithesh Naik, Zhengbin Wang, Zhanhu Guo

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Hydrogen permeation usually facilitates the corrosion of stainless steel remarkably. Herein, the corrosion behavior of a nickel-free high-nitrogen stainless steel (HNSS) containing 0.96 wt.% nitrogen with hydrogen charging is investigated by means of electrochemical measurements and x-ray photoelectron spectroscopy surface analysis. The results show that hydrogen charging not only increased the passive current density but also increased the pitting potential of HNSS. The increase in passive current density was attributed to the increased carrier density, depleted Cr content, and decreased O2−/OH ratio in the passive film, while the increase in the pitting potential resulted from the enrichment of N element in the passive film and the replacement of Ni with Mn in HNSS.

Original languageEnglish
JournalJOM
DOIs
Publication statusAccepted/In press - 2021

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)

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