A strong ceramic based on aluminum oxide and zirconium dioxide

The theoretical premises and experimental results on fabrication of ceramics based on aluminum oxide with a regulatable structure which ensures high strength properties and the possibility of wide use in different areas of technology were reported. The effect of adding zirconium oxide to aluminum oxide on the structure and strength properties of the ceramics was demonstrated. New ceramic materials having a high strength were developed with highly disperse powders. The technological parameters of corundum ceramics of the “Koral” type and materials from mixtures of zirconium dioxide and aluminum oxide containing tetragonal and cubic solid solutions based on zirconium dioxide were developed. Stable results were obtained for the strength properties of ceramics made of special-purity tetragonal zirconium dioxide.