Transparent glass-ceramics

Details Transparent glass-ceramics Transparent glass-ceramics

C - Chemistry, Metallurgy

03

C

C03C 10/16 (2006.01) C03C 3/108 (2006.01) C03C 4/00 (2006.01) C03C 13/00 (2006.01) C03C 13/04 (2006.01) G02B 1/00 (2006.01) G02B 6/10 (2006.01) G02B 6/18 (1995.01)

Patent

CA 2161494

The present invention is directed to the preparation of two groups of transparent glass-ceramics exhibiting high optical clarity and containing essentially only one crystal phase. The first group consists essentially, in cation percent, of SiO2 20-35 PbF2 19-23 AlO1.5 10-20 YF3 3-7, CdF2 19-34 and the second group consists essentially, in cation percent, of SiO2 20-35 PbF2 15-25 AlO1.5 10-20 YF3 3-7 CdF2 21-31 ZnF2 3-7 .

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