B.sub.2 O.sub.3 --P.sub.2 O.sub.5 --SiO.sub.2 glass-ceramics

Details B.sub.2 O.sub.3 --P.sub.2 O.sub.5 --SiO.sub.2 glass-ceramics B.sub.2 O.sub.3 --P.sub.2 O.sub.5 --SiO.sub.2 glass-ceramics

1985-05-23

1986-03-18

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Devitrified glass-ceramics

501 63, 501 77, C03C 1002, C03C 3097, C03C 3064

Patent

active

045769206

ABSTRACT:
This invention is directed to the production of transparent, translucent, or opaque glass-ceramic articles containing BPO.sub.4 as the predominant crystal phase by heat treating precursor glass articles consisting essentially, expressed in terms of weight percent on the oxide basis, of about:

REFERENCES:
patent: 3519445 (1970-07-01), MacDowell et al.
patent: 3922155 (1975-11-01), Broemer et al.
patent: 4366253 (1982-12-01), Yagi

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