초록 ▼

A process for producing a refractory material comprising essentially beta′-SiAlON wherein initial reactants comprising Al2O3 and SiO2 are nitrided for sufficient times and temperatures to convert at least a portion of the initial reactants to at least a portion of effective reactants and the effecti

A process for producing a refractory material comprising essentially beta′-SiAlON wherein initial reactants comprising Al2O3 and SiO2 are nitrided for sufficient times and temperatures to convert at least a portion of the initial reactants to at least a portion of effective reactants and the effective reactants are then further heated to produce an essentially beta′-SiAlON refractory material.

대표청구항 ▼

A process for producing an essentially beta′-SiAlON refractory material, the process comprising: providing a uniform mixture of initial reactant materials as sources of SiO2, Al2O3 and C in a reactor; nitriding said mixture at temperatures between 1200°C. and 1450°C. for a time sufficient to convert

A process for producing an essentially beta′-SiAlON refractory material, the process comprising: providing a uniform mixture of initial reactant materials as sources of SiO2, Al2O3 and C in a reactor; nitriding said mixture at temperatures between 1200°C. and 1450°C. for a time sufficient to convert at least a portion of said initial reactants to at least a portion of effective reactants; and heating said effective reactants in the presence of nitrogen at temperatures from 1400°to 1650°C. for a time sufficient to convert said effective reactants to an essentially beta′-SiAlON refractory material.