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Diffusion in Al-Cu Melts Studied by Time-Resolved X-Ray Radiography
Zhang, B. and Griesche, A. and Meyer, A. (2010) Diffusion in Al-Cu Melts Studied by Time-Resolved X-Ray Radiography. Physical Review Letters, 104, . DOI: 10.1103/PhysRevLett.104.035902.
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Abstract
We use time-resolved x-ray radiography in order to monitor interdiffusion processes in situ in liquid alloys. We measure temperature and composition dependent interdiffusion coefficients (DAlCu) in Al-rich Al-Cu melts. At constant temperature, DAlCu only exhibits a weak dependence of the alloy composition. As compared to self-diffusion, interdiffusion is enhanced by a factor of about 3. Our results demonstrate that it is not possible to express interdiffusion in terms of self-diffusion and thermodynamic driving forces.
| Document Type: | Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Title: | Diffusion in Al-Cu Melts Studied by Time-Resolved X-Ray Radiography | ||||||||
| Authors: |
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| Date: | 22 January 2010 | ||||||||
| Journal or Publication Title: | Physical Review Letters | ||||||||
| Refereed publication: | Yes | ||||||||
| In Open Access: | No | ||||||||
| In SCOPUS: | Yes | ||||||||
| In ISI Web of Science: | Yes | ||||||||
| Volume: | 104 | ||||||||
| DOI: | 10.1103/PhysRevLett.104.035902 | ||||||||
| Page Range: | |||||||||
| Status: | Published | ||||||||
| Keywords: | PACS numbers: 66.10.cg, 61.25.Mv, 65.20.-w | ||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||
| HGF - Program: | Space | ||||||||
| HGF - Program Themes: | W FR - Forschung unter Weltraumbedingungen | ||||||||
| DLR - Research area: | Space | ||||||||
| DLR - Program: | W FR - Forschung unter Weltraumbedingungen | ||||||||
| DLR - Research theme (Project): | W - Vorhaben Materialwissenschaftliche Forschung (old) | ||||||||
| Location: | Köln-Porz | ||||||||
| Institutes and Institutions: | Institute of Materials Physics in Space | ||||||||
| Deposited By: | Prof.Dr. Andreas Meyer | ||||||||
| Deposited On: | 27 Jan 2010 09:11 | ||||||||
| Last Modified: | 07 Feb 2013 20:39 |
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