Silicon carbide refractories

Carbide silicon refractory with high strength, thermal conductivity, good shock resistance, anti-oxidation, anti-wear, anti-corrosion and other excellent high temperature performance, is a high quality refractories. In metallurgy, energy, chemical and other industries widely used.
Initially silicon carbide refractory to clay, SiO2, silicates, mullite as the binding agent, with the application of high-tech means, the new silicon carbide products are widely developed. Such as: silicon nitride bonded silicon carbide, silicon nitride oxide bonded silicon carbide, reaction bonded silicon carbide, recrystallized silicon carbide, silicon infiltration method silicon carbide SiC. They are more excellent high temperature performance, so that the silicon carbide refractories continue to enter new areas of application.
A recrystallization of silicon carbide refractories
The purification of the silicon carbide powder and superfine powder, mixed with a certain amount of binding agent, after forming firing at 2200 ~ 2400 ℃. Recrystallization between the silicon carbide particles, and directly bonded silicon carbide content of 99%. Representing various combinations of the above-phase silicon carbide products, recrystallized silicon carbide products, with higher thermal mechanical strength, thermal conductivity, thermal shock resistance and oxidation resistance, is a high quality silicon carbide refractories. The United States in the late 1930s, the successful development of recrystallized silicon carbide products. For decades, the United States, Germany, Britain has a large production. Our research in this area has made great progress, for mass production.
Second, the infiltration of silicon carbide refractories law
Siliconized silicon carbide products in France and recrystallized silicon carbide products based on liquid or vapor infiltration of silicon, so that recrystallization of silicon carbide filled pores to generate more dense SiSiC, more excellent performance. At present, China is conducting SiSiC process and performance aspects of the research, there are small batch production.
In short, the silicon carbide refractories excellent performance, has been recognized, has been widely applied. Currently, high-performance silicon carbide refractories is still in research and development stage, the excellent performance of silicon carbide from play, reduce costs starting to fully grasp the material composition, microstructure and property relationships, is a guarantee of future production With further studies, will gradually expand its field of application, the market prospect is extremely broad.