PRODUCTION OF SINTERED CERAMIC MATERIAL

Title:

PRODUCTION OF SINTERED CERAMIC MATERIAL

Document Type and Number:

Japanese Patent JPH01183460

Kind Code:

A

Abstract:

PURPOSE:To obtain the title sintered material having improved fracture toughness, by forming a mixed raw material composed of alumina-silica powder, SiC power and ZrO2 powder, sintering under normal pressure and subjecting to hot hydrostatic press forming. CONSTITUTION:A formed article is produced by forming a mixed raw material composed of (A) 15-92wt.% of alumina-silica powder having an average particle diameter of <=1mum and composed of 60-86wt.% of Al2O3 and 40-14wt.% of SiO2, (B) 5-50wt.% of SiC powder having an average particle diameter of <=1mum and (C) 1-62wt.% of ZrO2 powder having an average particle diameter of <=1mum. The formed article is dried as necessary, sintered at 1600-1750 deg.C under normal pressure and subjected to hot hydrostatic press forming in a non-oxidizing atmosphere at 1500-1800 deg.C under a pressure of 200-2,000kgf/cm<2>.

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Inventors:

SAGAWA MASAAKI
ASAUMI JUNJI
UEAKA HIDETO
YAMAGISHI SENJO

Application Number:

JP470988A

Publication Date:

July 21, 1989

Filing Date:

January 14, 1988

Export Citation:

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Assignee:

NIHON CEMENT

International Classes:

C04B35/565; C04B35/18; C04B35/48; C04B35/645; (IPC1-7): C04B35/18; C04B35/48; C04B35/56

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