Rapidly crystallized beta-spodumene glass-ceramic materials

Details Rapidly crystallized beta-spodumene glass-ceramic materials Rapidly crystallized beta-spodumene glass-ceramic materials

1977-11-07

1980-03-11

Bashore, S. Leon

Glass manufacturing

Processes

Devitrifying glass or vitrifying crystalline glass

106 397, 106 52, C03B 3200, C03C 322

Patent

active

041926650

ABSTRACT:
Glasses in the Li.sub.2 O--Al.sub.2 O.sub.3 --SiO.sub.2 --MgO--ZnO--TiO.sub.2 composition field, additionally containing PbO and/or one of B.sub.2 O.sub.3, Na.sub.2 O and P.sub.2 O.sub.5 are rapidly crystallized to beta-spodumene glass-ceramics at temperatures not exceeding 1000.degree. C. to provide white, opaque glass-ceramic products exhibiting both low thermal expansion and good chemical durability.

REFERENCES:
patent: 3804608 (1974-04-01), Gaskell et al.
patent: 3809543 (1975-05-01), Gaskell et al.
patent: 3846101 (1974-11-01), Gaskell et al.
patent: 3901676 (1975-08-01), Heinze et al.
patent: 3907577 (1975-09-01), Kiefer
patent: 3985533 (1976-10-01), Grossman
patent: 3989496 (1976-11-01), Rittler
patent: 4000998 (1977-01-01), Rittler
patent: 4042362 (1977-08-01), MacDowell et al.

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