Colored transparent, translucent and opaque glass-ceramics

Details Colored transparent, translucent and opaque glass-ceramics Colored transparent, translucent and opaque glass-ceramics

1983-12-01

1984-07-24

Bell, Mark

Compositions: ceramic

Ceramic compositions

Devitrified glass-ceramics

501 7, 501 68, 501 69, 501 70, 501 71, C03C 322

Patent

active

044618395

ABSTRACT:
This invention is directed to the production of transparent, translucent, and opaque glass-ceramic articles containing .beta.-quartz solid solution as the predominant crystal phase exhibiting colors ranging from black to brown to red, and opaque glass-ceramic articles containing .beta.-spodumene solid solution as the predominant crystal phase exhibiting colors ranging from gray to brown to almond to beige to yellow to blue. Both types of articles can be prepared by heat treating precursor glass articles essentially free from MgO and consisting essentially, in weight percent, of:

REFERENCES:
patent: 3788865 (1974-01-01), Babcock et al.
patent: 3907577 (1975-09-01), Kiefer et al.
patent: 3962514 (1976-06-01), Rittler
patent: 4007048 (1977-02-01), Sack et al.
patent: 4042362 (1977-08-01), MacDowell
patent: 4084974 (1978-04-01), Beall et al.
patent: 4211820 (1980-07-01), Cantaloupe et al.

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