書誌事項
- タイトル別名
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- Co Diffusion in a B2-Type Ordered NiAl Compound
- B2ガタ キソク コウゾウ ノ キンゾク カン カゴウブツ NiAl チュウ ニ オケル Co ノ カクサン
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説明
Co diffusion in a B2-type ordered NiAl compound was investigated at seven compositions between 40.9 at%Al and 52.6 at%Al at five temperatures from 1423 K to 1623 K, using a diffusion couple method. The Co diffusion coefficients at each temperature have a minimum value at the stoichiometric composition, while their activation energies and pre-exponential factors reveal maximum values at this composition. The activation energies decrease gently with the Ni content in the Ni-rich side, but decrease steeply with the Al content in the Al-rich side. The interpretation of this behavior is discussed in terms of the diffusion mechanisms; the triple defect mechanism at stoichiometric composition, the antisite bridge mechanism in the Ni-rich side, and the next nearest neighbor jump mechanism with the structural Ni vacancies.
収録刊行物
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- 日本金属学会誌
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日本金属学会誌 66 (2), 67-74, 2002
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282681467902976
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- NII論文ID
- 10009395429
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- NII書誌ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL書誌ID
- 6085832
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- データソース種別
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- JaLC
- NDL
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