Transparent colored glass ceramic with good thermal...

Details Transparent colored glass ceramic with good thermal... Transparent colored glass ceramic with good thermal...

C - Chemistry, Metallurgy

03

C

261/14

C03C 10/14 (2006.01) C03C 4/02 (2006.01) C03C 10/00 (2006.01)

Patent

CA 1270862

ABSTRACT OF THE DISCLOSURE A transparent, colored glass ceramic containing high- temperature-quartz solid solution, whose transmission in the IR range between 800 nm and 2.6 microns can be variably adjusted, and which has the composition (in weight percent) of 62- 68% SiO2, 19.5 - 22.5% Al2O3, 3.0 - 4.0% Li2O, 1.5 - 3.5% BaO, 0.5 - 2.5% ZnO and 1.5 - 5.0% TiO2 in addition to other possible oxides, which are present in small quantities, the color being produced by MnO2, Fe2O3, CoO, NiO, V2O5 and Cr2O3. This glass ceramic is transformed from the starting glass by a heat treatment between 680°C and 920°C.

521350

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