PROCESS FOR PRODUCING STABILISED HAFNIUM OXIDE POWDER OR A HAFNIUM OXIDE-CONTAINING POWDER

摘要

A process is disclosed for producing a stabilised hafnium oxide powder or a hafnium oxide-containing powder suitable for compacting molded bodies, then for sintering them into high-density ceramic materials. For that purpose an aqueous solution of hafnium salt containing an additive is transformed into droplets. The thus obtained droplets are consolidated under the action of ammonia into gel particles which are then washed, dewatered, dried and calcined.