Hydrogen entry into pure iron treated by plasma nitriding

Yu Sugawara, Izumi Muto, Nobuyoshi Hara

研究成果: Conference contribution

抄録

In order to prevent hydrogen entry into steels, the effect of the plasma nitriding treatment on the hydrogen permeation behavior of pre irons was investigated in this study. The plasma nitriding was performed in a nitrogen-hydrogen atmosphere composed of 75 % N2-25 % H2 at 400 °C and 600 Pa for 3.6ks. The nitrogen compound layer was composed of ϵ-Fe2-3N and γ'-Fe4N phases, and its thickness was ca. 2.8μm. The hydrogen permeation tests revealed that the hydrogen absorption efficiency of the nitrided pure iron was one fiftieth that of the untreated one. In addition, the nitrided pure iron had a lower diffusion coefficient than the untreated one. The nitrided layer acts as an effective barrier against the hydrogen entry and diffusion in pure iron.

本文言語English
ホスト出版物のタイトルAtmospheric -and- Marine Corrosion
編集者I. Cole, C. Leygraf, R. Srinivasan, H. Katayama, A. Nishikata, E. Tada, M. Sakairi, M. Itagaki
出版社Electrochemical Society Inc.
ページ43-50
ページ数8
29
ISBN(電子版)9781607685395
DOI
出版ステータスPublished - 2016 1 1
イベントSymposium on Atmospheric -and- Marine Corrosion - PRiME 2016/230th ECS Meeting - Honolulu, United States
継続期間: 2016 10 22016 10 7

出版物シリーズ

名前ECS Transactions
番号29
75
ISSN(印刷版)1938-6737
ISSN(電子版)1938-5862

Other

OtherSymposium on Atmospheric -and- Marine Corrosion - PRiME 2016/230th ECS Meeting
国/地域United States
CityHonolulu
Period16/10/216/10/7

ASJC Scopus subject areas

  • 工学(全般)

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