Preparation method of glass ceramic

Abstract

The invention relates to a preparation method of glass ceramic. The method comprises the following steps: (1) preparing the following raw materials by mass percent: 30%-40% of magnesia borosilicate glass powder, 30%-50% of aluminum oxide filler powder, 10%-30% of Y2O3 and 10%-15% of rare earth ions, wherein the magnesia borosilicate glass powder contains 40%-70% of SiO2, 8%-25% of B2O3, 5%-30% of Al2O3 and 20%-30% of MgO; (2) performing heat treatment for the first time at 650-750 DEG C and performing heat treatment for the second time at 700-750 DEG C. A glass ceramic substrate prepared by the method is high in reflection rate, low in glass phase crystallization rate and excellent in luminous performance.

Description

technical field [0001] The invention relates to a method for preparing glass ceramics, in particular to a method for preparing glass ceramics applicable to optical glass. Background technique [0002] With the rapid development of information technology and optoelectronic technology, people pay more and more attention to the special properties of phosphors, which exist in the form of crystalline powder, single crystal, film, ceramics, glass, etc. Because glass has the advantages of being uniform, transparent, easy to process into various shapes, and can be doped at a higher concentration, it has gradually become a good matrix material for inorganic luminescence, and its use is becoming more and more extensive. [0003] Light sources are generally divided into discharge lamps and solid-state lamps, where heat radiators dominate in general lighting and automotive applications, such as halogen lamps. Additionally, solid state light sources in the form of luminescent radiators,...

AI Technical Summary

Problems solved by technology

[0006] At present, the research on the luminescent properties of borosilicate glass by single rare earth ions is more common, however, there are few literature reports that can use the combination of multiple rare earth ions to study its influence on the luminescent properties of borosilicate glass; in addition, For the preparation method of glass ceramics, the smelting process is also mostly used, and there are few literature reports that the preparation of glass ceramics can be carried out by multiple heat treatments.