Sedimentation of atoms in solid under a strong acceleration field of around 1 million g

The behavior of atoms in a solid under a strong acceleration field of around 1 million (10 6 ) g at high temperature (mega-gravity field) was examined. The ultracentrifuge experiment was performed on an antimony (Sb)-bismuth (Bi) system solid alloy in a maximum acceleration field of (0.85–1.03)×10 6...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 1997-04, Vol.36 (4B), p.L498-L500
Main Authors: MASHIMO, T, OKAZAKI, S, TASHIRO, S
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Foundry engineering
Metals. Metallurgy
Other casting methods. Solidification
Production techniques
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Summary:The behavior of atoms in a solid under a strong acceleration field of around 1 million (10 6 ) g at high temperature (mega-gravity field) was examined. The ultracentrifuge experiment was performed on an antimony (Sb)-bismuth (Bi) system solid alloy in a maximum acceleration field of (0.85–1.03)×10 6 g at 220–240° C for 85 hours. Large composition gradients of Sb (about 20–0 wt%) and Bi (80–100 wt%) and the continuous changes in lattice parameters were observed at that location where the external energy was comparable to or larger than the thermal energy. This result provides the first evidence of the sedimentation of component atoms in a solid.
ISSN:0021-4922
1347-4065
DOI:10.1143/jjap.36.l498