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Cristobalite Phase Formation in Glass/Ceramic Composites
Author(s) -
Imanaka Yoshihiko,
Aoki Shigenori,
Kamehara Nobuo,
Niwa Koichi
Publication year - 1995
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1995.tb08480.x
Subject(s) - mullite , borosilicate glass , materials science , composite material , ceramic , thermal expansion , cristobalite , dielectric , spinel , glass ceramic , nitride , phase (matter) , aluminium oxides , precipitation , aluminium , quartz , metallurgy , chemistry , physics , meteorology , biochemistry , optoelectronics , organic chemistry , layer (electronics) , catalysis
The effect of several different aluminum‐containing ceramic additions to borosilicate glass on suppressing cris‐tobalite precipitation has been examined. The results showed that mullite or aluminum nitride suppresses cristo‐balite formation more effectively than alumina or spinel. Although both follow a simple rule of mixtures, glass/mullite composites can be fabricated with lower dielectric constants than glass/alumina composites, while maintaining a thermal expansion coefficient close to Si. Electron micro‐analysis using X‐ray energy dispersive spectroscope showed that the measured interdiffusion coefficient between alumina and glass is in good agreement with the data which have already been published.