Interdiffusion in B2 type intermetallic compound FeAl under high pressures

Ryusuke Nakamura, Yoshihiro Yamazaki, Yoshiaki Iijima

研究成果: ジャーナルへの寄稿記事

4 引用 (Scopus)

抄録

Interdiffusion coefficient in the B2 FeAl phase at 46-50 at%Al has been measured in the temperature range from 1173 to 1473 K under the pressure from 0.1 MPa to 5 GPa. The activation volume for interdiffusion, ΔV̄, derived from the pressure dependence of interdiffusion coefficient is found to be 0.58-0.90Vm (Vm: molar volume of alloys), which is comparable to or larger than 0.4-0.6Vm for the monovacancy mechanism in bcc pure metals or random alloys. The value of ΔV̄ increases with increasing temperature and also with deviating from stoichiometry, suggesting that divacancy contributes to the diffusion in higher temperatures and in the region of off-stoichiometry.

元の言語英語
ページ(範囲)78-82
ページ数5
ジャーナルMaterials Transactions
44
発行部数1
DOI
出版物ステータス出版済み - 1 1 2003
外部発表Yes

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Intermetallics
intermetallics
stoichiometry
Stoichiometry
coefficients
pressure dependence
activation
Density (specific gravity)
Temperature
temperature
Metals
Chemical activation
metals

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

これを引用

Interdiffusion in B2 type intermetallic compound FeAl under high pressures. / Nakamura, Ryusuke; Yamazaki, Yoshihiro; Iijima, Yoshiaki.

:: Materials Transactions, 巻 44, 番号 1, 01.01.2003, p. 78-82.

研究成果: ジャーナルへの寄稿記事

Nakamura, Ryusuke ; Yamazaki, Yoshihiro ; Iijima, Yoshiaki. / Interdiffusion in B2 type intermetallic compound FeAl under high pressures. :: Materials Transactions. 2003 ; 巻 44, 番号 1. pp. 78-82.
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