Hydrogen Permeability through n-type Cr2O3 Scale at 1273 K under the Oxygen Activities of 1.6 × 10–18 – 1.0 × 10–16

• Tanaka Minoru

  Department of Metallurgy and Ceramics Science, Graduate School of Science and Engineering, Tokyo Institute of Technology

• Ueda Mitsutoshi

  Department of Metallurgy and Ceramics Science, Graduate School of Science and Engineering, Tokyo Institute of Technology

• Kawamura Kenichi

  Department of Metallurgy and Ceramics Science, Graduate School of Science and Engineering, Tokyo Institute of Technology

• Maruyama Toshio

  Department of Metallurgy and Ceramics Science, Graduate School of Science and Engineering, Tokyo Institute of Technology

書誌事項

タイトル別名

• Hydrogen Permeability through n-type Cr2O3 Scale at 1273 K under the Oxygen Activities of 1.6 * 10-18 - 1.0 * 10-16

抄録

The effect of dissolution of hydrogen on the defect structure of Cr₂O₃ was studied. The hydrogen flux and permeability through Cr₂O₃ scale were measured at 1273 K in the oxygen activities of 1.6 × 10^–18 – 1.0 × 10^–16. The oxygen activities on the both sides of the sample were controlled by fixing the H₂/CO₂ and CO/CO₂ ratios to measure the hydrogen permeability without oxygen activity gradient through the sample. The measured hydrogen flux and permeability was proportional to a_H2^1/2 and a_O2^–1/8 respectively. The activity dependences indicate that dissolved hydrogen is the neutral hydrogen at oxygen site as a minor defect and does not affect the oxidation behavior of chromia-forming alloys.

収録刊行物

• ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ

  ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ 51 (4), 638-644, 2011

  一般社団法人 日本鉄鋼協会

キーワード

• hydrogen permeability
• hydrogen flux
• defect structure
• Cr₂O₃ scale

詳細情報

• CRID: 1390001206487211904
• NII論文ID: 10029580960
• NII書誌ID: AA10680712
• DOI: 10.2355/isijinternational.51.638
• ISSN: 13475460
• ISSN: 09151559
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational/51/4/51_4_638/_pdf
• 本文言語コード: en
• データソース種別:
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• 抄録ライセンスフラグ: 使用不可