Crystallization Behavior of Cordierite-Based Glass with Excess SiO 2 and Al 2 O 3 at Initial Stage

Crystallization behavior of cordierite-based glass with excess SiO 2 and Al 2 O 3 (CM glass) was studied at the initial crystallization stage. Two kinds of glass-in-glass phase separation occurred during the heat treatment of glass powder. The secondary glass-in-glass phase separation, which consist...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 1994-02, Vol.33 (2R), p.1101
Main Authors: Son, Yong-Bai, Kim, Chong-Hee, Jang, Sung-Do, Liu, Jun, Mehmet Sarikaya, Mehmet Sarikaya, Ilhan A. Aksay, Ilhan A. Aksay
Format: Article
Language:English
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Summary:Crystallization behavior of cordierite-based glass with excess SiO 2 and Al 2 O 3 (CM glass) was studied at the initial crystallization stage. Two kinds of glass-in-glass phase separation occurred during the heat treatment of glass powder. The secondary glass-in-glass phase separation, which consists of an SiO 2 -rich phase and an Al 2 O 3 -rich phase significantly affects the crystallization of the glass and the resultant microstructures of the crystallized glass. Mullite nucleated first in the Al 2 O 3 -rich amorphous phase which is no longer a stable glass-forming region. Metastable µ-cordierite crystallized in the SiO 2 -rich amorphous phase and grew rapidly. A fine-grained cordierite-mullite composite with mullite as the grain boundary phase was produced.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.33.1101