Premium
Microstructural Development on Crystallizing Hot‐Pressed Pellets of Cordierite Melt‐derived Glass Containing B 2 O 3 and P 2 O 5
Author(s) -
Glendenning Malcolm D.,
Lee William E.
Publication year - 1996
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.1151-2916.1996.tb07933.x
Subject(s) - cordierite , crystallization , nucleation , materials science , pellets , crystal growth , chemical engineering , mineralogy , stoichiometry , crystallography , composite material , chemistry , ceramic , organic chemistry , engineering
Comparing the crystallization mechanism of stoichiometric and B 2 O 3 and P 2 O 5 containing glass reveals that the additives extend the gap between the glass transition and crystallization temperatures and suppress formation of μ, cordierite while promoting direct crystallization of α cordierite. Detailed TEM analysis of nucleation and growth of crystals in hot‐pressed pellets of B 2 O 3 /P 2 O 5 ‐containing glass particles shows that nucleation occurs on unidentified heterogeneous nuclei at the sites of the previous particle surfaces. Growth of α cordierite with a cellular morphology or μ cordierite with a dendritic morphology is most likely controlled by the glass composition directly ahead of the growth front.