Alkali metal, calcium fluorosilicate glass-ceramic articles

Details Alkali metal, calcium fluorosilicate glass-ceramic articles Alkali metal, calcium fluorosilicate glass-ceramic articles

1981-10-05

1983-05-31

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Devitrified glass-ceramics

501 5, 501 57, 501 58, 501 59, 501 62, 501 63, C03C 322, C03C 304

Patent

active

043861628

ABSTRACT:
The instant invention is directed to the production of highly crystalline glass-ceramic articles demonstrating high intrinsic mechanical strength and toughness containing crystals of canasite and/or agrellite and/or fedorite as the predominant crystal phase. The articles have overall compositions consisting essentially, expressed in terms of weight percent on the oxide basis, of about

REFERENCES:
patent: 3799836 (1974-03-01), Rogers et al.
patent: 3839056 (1974-10-01), Grossman

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