Process for producing .alpha.-Sialon powder

Details Process for producing .alpha.-Sialon powder Process for producing .alpha.-Sialon powder

1987-03-17

1989-07-04

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501 96, 423115, C04B 3558

Patent

active

048450596

ABSTRACT:
A fine particulate .alpha.-Sialon powder with a narrow particle size distribution, thus having an excellent sinterability, can be produced by using as the starting materials (a) amorphous silicon nitride, (b) metallic aluminum or aluminum nitride, and (c) an oxide of a metal which can be incorporated in the interstices of .alpha.-Sialon lattice or a metal compound capable of forming such a metal oxide upon thermal decomposition, and optionally, (d) an oxygen-containing compound of alumina or silicon, followed by heat treatment of the resultant mixture.

REFERENCES:
patent: 4506020 (1985-03-01), Butler et al.
patent: 4547470 (1985-10-01), Tanase et al.

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