Glass ceramic and preparation method thereof

Abstract

The invention provides an amber glass ceramic which is relatively high in hardness and resistant to high temperature. The amber glass ceramic comprises the following ingredients by weight percent: 50-70 percent of SiO2, 10.0-25 percent of Al2O3, 3-10 percent of TiO2, 0.2-0.7 percent of CuO, 0-22 percent of MgO and 0-20 percent of ZnO, and comprises at least one of MgO and ZnO. The glass ceramic has the Moh's hardness of 7.5-8 H, can be applied to decorative materials and ornaments, can solve the problem of scratching of ordinary amber glass, is not softened at the high temperature of 1150 DEG C, therefore, is high-temperature resistant and can be further processed under the high-temperature condition. The glass ceramic is high in mechanical strength, hardness and thermal stability, and excellent in chemical stability, wearing resistance and electric insulativity, and can be used for decorative materials, building inner and outer walls, grounds, gallery-column and other high-grade decoration projects.

Description

technical field [0001] The invention relates to a glass-ceramic and a preparation method thereof, in particular to an amber glass-ceramic and a preparation method thereof. technical background [0002] Glass-ceramics has the advantages of glass, ceramics and natural stone, and has excellent thermodynamic properties, good chemical stability, high strength, high wear resistance, uniform and crystal-clear surface gloss, and easy cleaning. These characteristics determine the characteristics of glass-ceramics Occupying an important position in the field of materials, it can be used in high-end decoration projects such as building interior and exterior walls, floors, and corridor columns. [0003] Traditional amber glass is colored by adding selenium and cadmium to the glass. Because cadmium is toxic, it is not suitable for use in the existing environment. The Mohs hardness of ordinary amber glass is 5H, while the Mohs hardness of commonly used knives is 5H. 5.5-6H, the grit or d...

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Problems solved by technology

[0003] Traditional amber glass is colored by adding selenium and cadmium to the glass. Because cadmium is toxic, it is not suitable for use in the existing environment. The Mohs hardness of ordinary amber glass is 5H, while the Mohs hardness of commonly used knives is 5H. 5.5-6H, the grit or dust contains silica Mohs hardness 7H, which can cause scratches or wear on the surface of the existing amber decorative glass, affecting its decorative effect and service life, and ordinary amber glass does not High temperature resistance, it starts to soften at 700-800°C, and cannot be used at high temperatures

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