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Phase identification in calcia-alumina fibers crystallized from amorphous precursors

Authors
Journal
Journal of Non-Crystalline Solids
0022-3093
Publisher
Elsevier
Publication Date
Volume
152
Identifiers
DOI: 10.1016/0022-3093(93)90243-q

Abstract

Abstract Amorphous fibers of a 46.5 wt% CaO-53.5 wt% Al 2O 3 eutectic compound were produced by inviscid melt-spinning. Fibers were subsequently heat treated at 900, 1000 and 1100°C for times ranging from 6 to 6000 s to elucidate crystallization processes. Fiber samples were ground for X-ray analysis. Equilibrium compounds Ca 12Al 14O 33, Ca 3Al 10O 18 and CaAl 4O 7 were present in varying amounts in all crystallized fibers. Liquid formation in fibers exposed to 1100°C for 6000 s was noted.

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