Premium
Coalescence and Crystallization in Powdered High‐Cordierite (2MgO·2Al 2 O 3 ·5SiO 2 ) Glass
Author(s) -
Watanabe Koichi,
Giess Edward A.
Publication year - 1985
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.1151-2916.1985.tb15307.x
Subject(s) - cordierite , crystallization , nucleation , coalescence (physics) , activation energy , materials science , mineralogy , viscosity , differential thermal analysis , thermodynamics , chemical engineering , diffraction , chemistry , composite material , optics , physics , ceramic , astrobiology , engineering
Coalescence and crystallization in powdered high‐cordierite glass were investigated by DTA, SEM, and XRD methods, using also thermal expansion and viscosity data. The apparent activation energy for crystallization obtained from the DTA experiments was about half that for viscous flow estimated from the viscosity. Crystallization in such a system is believed to be controlled by a surface nucleation mechanism.