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Electrical properties of Al-In-Sn alloys directionally solidified in high and low gravitational fieldsThe Al-In-Sn alloys were directionally solidified in the NASA KC-135 aircraft which flies a series of parabolas to generate high (high-g) and low (low-g) gravity forces parallel to the longitudinal growth axis. Thus, for a given sample, successive sections can be identified which were solidified in high-g and low-g. Measurements of the electronic properties of the samples reveal that: the resistivity of the low-g sections is larger (about a factor of 10) than that of the high-g sections; the low-g sections behave conductively like a semi-metal, while the high-g sections are essentially metallic; and both high-g and low-g sections are superconducting but the superconducting transition temperature of the low-g sections is 1 K higher than that of the high-g sections.
Document ID
19870064023
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Wu, M. K.
(Alabama Univ. Huntsville, AL, United States)
Ashburn, J. R.
(Alabama Univ. Huntsville, AL, United States)
Kaukler, W. F.
(Alabama, University Huntsville, United States)
Curreri, P. A.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 13, 2013
Publication Date
August 1, 1987
Publication Information
Publication: Metallurgical Transactions A - Physical Metallurgy and Materials Science
Volume: 18A
ISSN: 0360-2133
Subject Category
Materials Processing
Accession Number
87A51297
Distribution Limits
Public
Copyright
Other

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