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Melt-spin processing of YBa2Cu3O7−x

Published online by Cambridge University Press:  31 January 2011

T.J. Folkerts ,
M.J. Kramer ,
K.W. Dennis  and
R.W. McCallum
T.J. Folkerts
Affiliation:
Institute for Physical Research and Technology, Iowa State University, Ames, Iowa 50010
M.J. Kramer
Affiliation:
Department of Geological and Atmospheric Sciences and Institute for Physical Research and Technology, Iowa State University, Ames, Iowa 50010
K.W. Dennis
Affiliation:
Ames Laboratory, Iowa State University, Ames, Iowa 50010
R.W. McCallum
Affiliation:
Department of Materials Science and Engineering and Institute for Physical Research and Technology, Iowa State University, Ames, Iowa 50010
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Abstract

We introduce a novel containerless melt-spin processing technique for YBa2Cu3O7−x using prereacted oxide powders that are rapidly melted and subsequentially quenched in a controlled atmosphere. This results in flakes with typical dimensions of 3000 × 150 × 15 μm3. Powder XRD indicates that all samples contain Y2O3, but that the Ba–Cu–O phases present depend on the processing parameters. SEM and TEM studies show these phases are finely dispersed: the typical grain size for Y2O3 is 1–2 μm, and for the Ba–Cu–O phases it is <0.5 μm.

Type
Articles
Information
Journal of Materials Research , Volume 6 , Issue 10 , October 1991 , pp. 2035 - 2040
Copyright
Copyright © Materials Research Society 1991

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