Alumina is the most popular materials in fine ceramics, due to excellent wear resistance, corrosion resistance and insulated characteristics at a reasonable price compared with other fine ceramic materials.
Silicon nitride has the highest thermal shock resistance of all the fine ceramic materials. Other unique characteristics are excellent corrosion resistance and fracture toughness with low thermal expansion, relatively low density and high strength.
Zirconia exceeds other fine ceramic materials in strength and fracture toughness at normal temperature. It also carries out remarkably smooth surfaces and sharp edges with fine grain sizes.
Silicon carbide has the finest corrosion resistance in all developed ceramic materials. It retains constant strength at high temperature around 1,400¢ªC, and has excellent thermal shock resistance and wear resistance as well.