Hydrogen Permeability through n-type Cr_2O_3 Scale at 1273K under the Oxygen Activities of 1.6×10^<-18>-1.0×10^<-16>
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概要
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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 aH21/2 and aO2–1/8 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.
- 社団法人 日本鉄鋼協会の論文
- 2011-04-15
著者
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Ueda Mitsutoshi
Department Of Metallurgy And Ceramics Sciences Graduate School Of Science And Engineering Tokyo Inst
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Maruyama Toshio
Department Of Metallurgy And Ceramics Sciences Graduate School Of Science And Engineering Tokyo Inst
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Maruyama Toshio
Department Of Biology School Of Education Waseda
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Kawamura Kenichi
Department Of Metallurgy And Ceramics Sciences Graduate School Of Science And Engineering Tokyo Inst
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Kawamura Kenichi
Department Of Metallurgy And Ceramics Science Graduate School Of Science And Engineering Tokyo Insti
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Ueda Mitsutoshi
Department Of Metallurgy And Ceramics Science Graduate School Of Science And Engineering Tokyo Insti
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Tanaka Minoru
Department Of Anatomy Kyoto Prefectural University Of Medicine
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Tanaka Minoru
Department Of Metallurgy And Ceramics Science Graduate School Of Science And Engineering Tokyo Institute Of Technology
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UEDA MITSUTOSHI
Department of Chemistry, College of General Education, University of Osaka Prefecture
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