Mixture for ceramic material based on zirconium and aluminium oxides and zirconium nitride. RU patent 2455261.

FIELD: chemistry.

SUBSTANCE: invention relates to ceramic material science, particularly to production of ceramic material based on heat-resistant non-oxygen and oxide compounds, characterised by high strength and crack-resistance, and can be used to make a cutting tool, in oil and gas industry (valve devices and sealing rings of pumps), in making nozzle extensions for air-sand blowers and chemical solution sprayers. The ceramic material is obtained from a mixture which contains components in the following ratio, wt %: Al₂O₃ 10-40, ZrN 20-65, ZrO₂ - the balance, at sintering temperature 1700-1800°C and nitrogen pressure during sintering of 0.10-0.12 MPa without a complex operation for isostatic moulding using high pressure.

EFFECT: obtaining ceramic material with high crack-resistance (coefficient of intensity of critical stress 7-14 MPa·m^1/2 s) and bending strength 650-750 MPa.

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IPC classes for russian patent Mixture for ceramic material based on zirconium and aluminium oxides and zirconium nitride. RU patent 2455261. (RU 2455261):

C04B35/58 - based on borides, nitrides or silicides

C04B35/486 -

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