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X-Ray Characterization of the Crystallization Process of High-TC Superconducting Oxides in the Sr-Bi-Pb-Ca-Cu-O System

Published online by Cambridge University Press:  28 February 2011

Winnie Wong-Ng ,
Chwan K. Chiang ,
Stephen W. Freiman ,
Lawrence P. Cook ,
Nong M. Hwang  and
Michael D. Hill
Winnie Wong-Ng
Affiliation:
Ceramics Division, National Institute of Standards and Technology, Gaithersburg, MD 20899.
Chwan K. Chiang
Affiliation:
Ceramics Division, National Institute of Standards and Technology, Gaithersburg, MD 20899.
Stephen W. Freiman
Affiliation:
Ceramics Division, National Institute of Standards and Technology, Gaithersburg, MD 20899.
Lawrence P. Cook
Affiliation:
Ceramics Division, National Institute of Standards and Technology, Gaithersburg, MD 20899.
Nong M. Hwang
Affiliation:
Ceramics Division, National Institute of Standards and Technology, Gaithersburg, MD 20899.
Michael D. Hill
Affiliation:
Ceramics Division, National Institute of Standards and Technology, Gaithersburg, MD 20899.
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Abstract

Phase assemblages in two Sr-Bi-Pb-Ca-Cu-O glasses and their crystallization into glass-ceramics through a sequence of heat treatments are described. Samples were heat treated at various temperatures based on differential thermal analysis (DTA) analysis of the as-quenched glasses. X-ray powder diffraction was used to identify the compounds in each sample; and the different phases formed in these two samples were compared. Results of microstructural characterization of selected samples using scanning electron microscopy are discussed.

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