Diffusion of <SUP>65</SUP>Zn in Aluminum and Al–Zn–Mg Alloy over a Wide Range of Temperature
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- Fujikawa S.
- Department of Materials Science, Faculty of Engineering, Tohoku University
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- Hirano Ken-ichi
- Department of Materials Science, Faculty of Engineering, Tohoku University
Bibliographic Information
- Other Title
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- Diffusion of <SUP>65</SUP>Zn in Aluminum and Al–Zn–Mg Alloy over a Wide Range of Temperature
Abstract
The diffusivities of Zn in Al and Al-5 wt% Zn-2 wt% Mg alloy were determined by the residual-activity method with radioactive tracer 65Zn in the temperature ranges of 165∼645°C and 165∼560°C, respectively.<BR>The temperature dependences of the diffusivities of Zn in Al and its alloy are given by the following equations:<BR>DZn/Al=(0.177−0.037+0.047)exp{−(28.2±0.3)kcal⁄mol⁄RT}cm2⁄sec, and<BR>DZn/Al–Zn–Mg=(0.682±0.017)exp{−(29.8±0.02)kcal⁄mol⁄RT}cm2⁄sec.<BR>We have evaluated the difference in activation energy (ΔQ) between the impurity diffusion of Zn in Al and the self-diffusion of Al by means of the oscillating potential and Le Claire’ theory. The result shows that the theoretical value of ΔQ agrees well in both sign and order of magnitude with the experimental value.
Journal
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- Transactions of the Japan Institute of Metals
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Transactions of the Japan Institute of Metals 17 (12), 809-818, 1976
The Japan Institute of Metals
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Keywords
Details 詳細情報について
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- CRID
- 1390282680094743296
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- NII Article ID
- 130003485451
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- COI
- 1:CAS:528:DyaE2sXhsF2luro%3D
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- ISSN
- 24324701
- 00214434
- http://id.crossref.org/issn/00214434
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed