Microcrystalline glass and preparation method thereof

Abstract

The invention provides amber microcrystalline glass with high hardness and high-temperature resistance. The microcrystalline glass comprises, by weight, 50 to 70% of SiO2, 10.0 to 25% of Al2O3, 3 to 10% of TiO2, 0.2 to 0.7% of CuO, 0 to 22% of MgO and 0 to 20% of ZnO, wherein the microcrystalline glass contains at least one selected from the group consisting of MgO and ZnO. The microcrystalline glass of the invention has a Mohs hardness of 7.5-8 H, can be applied to decorative materials and decorative articles, and overcomes the problem of scratching of ordinary amber glass. The microcrystalline glass is not softened at a high temperature of 1,150 DEG C, has resistance to high temperatures, and can be further processed under high-temperature conditions. The microcrystalline glass of the invention has high mechanical strength, hardness and thermal stability, and good chemical stability, wear resistance and electrical insulation performance, and can be applied to decorative materials andused for high-grade decoration projects for interior and exterior walls, floors and pillars of buildings, etc.

Description

[0001] This application is a divisional application for the invention patent application with the application number 201510875782.8, the application date is December 3, 2015, and the title is "glass ceramics and its preparation method". technical field [0002] 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 [0003] 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. [0004] Traditional amber glass is colored by adding sele...

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Problems solved by technology

[0004] 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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