Cordierite-based glass ceramic combined silicon carbide ceramic material and preparation method thereof
A technology of silicon carbide ceramics and glass-ceramics, applied in the field of ceramic materials, can solve the problems of reducing liquid phase, unfavorable liquid phase sintering, and no silicon carbide, and can reduce the sintering temperature, which is beneficial to popularization and application and industrial technology, and improves the The effect of chemical compatibility
Active Publication Date: 2021-08-20
JINGDEZHEN CERAMIC INSTITUTE
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Abstract
The invention discloses a cordierite-based glass ceramic combined silicon carbide ceramic material, which comprises a base material and a binding agent, wherein the base material comprises 10-30 wt% of cordierite-based glass ceramic powder and 70-90 wt% of oxidation pretreatment silicon carbide aggregate, the cordierite-based glass ceramicpowder is prepared from the following components in percentage by weight: 15-22 wt% of MgO, 20-25 wt%of Al2O3, 56-60 wt%of SiO2 and 1-3 wt% of Li2O, the oxidation pretreatment silicon carbide aggregate is prepared by performing oxidation treatment on silicon carbide aggregate at a temperature of 1000-1100 DEG C for 1-2 hours, and the use amount of the binding agent is 8-12wt% of the base material. The invention also discloses a preparation method of the cordierite-based glass ceramic combined silicon carbide ceramic material. According to the invention, cordierite-based glass ceramicis taken as a sintering aid, and cordierite crystals are added in a matrix in an in-situ synthesis manner, so that not only is a low-temperature sintering aid provided, but also the silicon carbide ceramic material with high density and low sintering temperature is obtained; and the method has important significance in improving the quality of the silicon carbide ceramic material and saving the product cost, and is beneficial to popularization and application progress and development of the industry technology.
Technology Topic
CordieriteCarbide silicon +3
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