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碳化硅特种陶瓷是近十年内发展起来的一种新材料,该材料在高温下强度和硬度高、蠕变小、抗氧化、耐腐蚀、耐磨损、耐烧蚀,是理想的工程用高温结构材料。由于碳化硅特种陶瓷有如此优异的性能,已被国际上公认为比金属、硬质合金、氧化铝陶瓷更佳的机械密封性能。作为密封件来说,它还具有自润滑性和摩擦系数小(约为硬质合金的一半)等优点,近年来国外大量应用碳化硅特种陶瓷作机械密封件,广泛用于汽车、机械、石油、化工等领域。
Silicon carbide special ceramic is a new material developed in recent ten years. The material is high strength and hardness at high temperature, small creep, anti-oxidation, corrosion resistance, wear resistance, ablation resistance, which is the ideal engineering high temperature Structural materials. Due to the excellent performance of silicon carbide specialty ceramics, it has been internationally recognized as a better mechanical seal performance than metals, cemented carbide and alumina ceramics. As a seal, it also has the advantages of small self-lubricating and friction coefficient (about half of the carbide), etc. In recent years, a large number of foreign countries for the use of special silicon carbide ceramic seals for machinery, widely used in automobiles, machinery, oil , Chemical and other fields.