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Effect of Silicon Carbide Additions on the Crystallization Behavior of a Magnesia‐Lithia‐Alumina‐Silica Glass
Author(s) -
Coon Dennis N.
Publication year - 1989
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.1151-2916.1989.tb09725.x
Subject(s) - crystallization , materials science , dissolution , phase (matter) , amorphous solid , silicon carbide , chemical engineering , carbide , mineralogy , oxide , metallurgy , crystallography , chemistry , organic chemistry , engineering
Glass in the MgO‐Li 2 O‐A1 2 O 3 ‐SiO 2 system was observed to crystallize readily at temperatures from 700° to 900°C. The primary crystalline phase evolved was Li 2 Si 2 O 5 , and the secondary phase evolved was Li 2 SiO 3 . The glass was amorphous after heating in air at 1050°C for 30 min. The addition of 0.5 wt% SiC powder resulted in the crystallization of Li 2 SiO 3 during heating in air at 1050°C for 30 min. It was suggested that the difference in crystallization behavior with Sic addition was due to dissolution of Sic into the oxide glass.