Title

Effects of Gravity Level on Phase Separation of PbO-B2O2 Glasses

Abstract

PbO-B2O3 glasses were melted and solidified through drop shaft experiment to explore the phase-separation of the glasses under different gravity conditions. XRD was conducted to determine the phase of samples after phase-separation. The distribution of elements in different samples was compared through EDS analysis and the microstructures were observed by SEM. Results show that both Pb-rich phase and B-rich phase consistently exist in all the glasses no matter how different the gravity level is. For the sample of phase-separation happened under high gravity, the size of separated Pb-rich phase in the top of the sample is much smaller than that in the bottom of the sample, and the homogeneization of elements is the worst due to the difference in density between Pb-rich phase and B-rich phase.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Gravity; Lead-borate glass; Phase-separation; Energy dispersive spectroscopy; Microstructure; Scanning electron microscopy; X ray diffraction analysis

International Standard Serial Number (ISSN)

1000324X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

Chinese

Language 2

English

Rights

© 2006 Science Press, All rights reserved.

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