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Containerless solidification of YBa2Cu3O7-x in a drop tube

Published online by Cambridge University Press:  31 January 2011

V.R. Todt  and
G.J. Schmitz
V.R. Todt
Affiliation:
ACCESS e.V., Intzestraβe 5, D-5100 Aachen, Germany
G.J. Schmitz
Affiliation:
ACCESS e.V., Intzestraβe 5, D-5100 Aachen, Germany
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Abstract

YBa2Cu3O7-x was molten and resolidified by a containerless process under free-fall conditions in a drop tube. The resulting samples revealed four different microstructures originating either from a “high-temperature melt” (Tm ≥ 1550 K) or from a “low-temperature melt” (1288 K ≤ Tm ≤ 1550 K). All structures exhibited very fine, homogeneously dispersed structural constituents. One of these microstructures is not compatible with actual equilibrium phase diagrams and implies the kinetic suppression of the nucleation of both the Y2BaCuO5- and the Y2O3-phase.

Type
Articles
Information
Journal of Materials Research , Volume 8 , Issue 3 , March 1993 , pp. 411 - 414
Copyright
Copyright © Materials Research Society 1993

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References

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