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Origin of cristobalite formation during sintering of a binary mixture of borosilicate glass and high silica glass

Published online by Cambridge University Press:  03 March 2011

Tapan K. Gupta  and
Jau-Ho Jean
Tapan K. Gupta
Affiliation:
Alcoa Technical Center, Alcoa Center, Pennsylvania 15069–0001
Jau-Ho Jean
Affiliation:
Alcoa Electronic Packaging, Inc., San Diego, California 92127
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Abstract

It was shown previously1 that cristobalite precipitates out of a mixture of borosilicate glass (BSG) and high silica glass (HSG) when sintered at temperatures ranging from 800 to 1200 °C. In this paper, both direct and indirect evidences are presented to conclude that the formation of cristobalite originates in HSG. It is proposed that the cristobalite is formed as a result of dissolution of HSG in BSG and precipitation at heterogeneously nucleated sites. The process of dissolution and precipitation continues until the whole HSG particle is consumed.

Type
Articles
Information
Journal of Materials Research , Volume 9 , Issue 4 , April 1994 , pp. 999 - 1005
Copyright
Copyright © Materials Research Society 1994

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References

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