Copper alumino-silicate glasses
The present invention is directed at a copper aluminosilicate glass, having coefficients of thermal expansion (CTEs) of between 20-82x10-7/° C. (over a range of 25-500° C.) and a softening points in the range of 660-1000° C., being suitable for use as a sealing glass, especially for borosilicate gla...
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Main Author | |
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Format | Patent |
Language | English |
Published |
21.05.2002
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | The present invention is directed at a copper aluminosilicate glass, having coefficients of thermal expansion (CTEs) of between 20-82x10-7/° C. (over a range of 25-500° C.) and a softening points in the range of 660-1000° C., being suitable for use as a sealing glass, especially for borosilicate glass, and having a composition consisting essentially, in terms of weight percent on an oxide basis, of 35-68 SiO2, 3-25 Al2O3, 2-26 B2O3, 0-20 R2O, 1-30 RO, 2-33 CuO, 0-4 F, 0-10 MxOy, where R2O is an alkali oxide selected from the group consisting of Li2O, Na2O, and K2O, and RO is an alkaline earth oxide selected from the group consisting of CaO, MgO, ZnO, SrO, and BaO, and MxOy is a transition metal oxide selected from the group consisting of Co2O3, TiO2, NiO, MnO2, and Fe2O3. |
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Bibliography: | Application Number: US20000585135 |