Postsintering hot isostatic pressing of ceria-doped tetragonal zirconia/alumina composites in a argon-oxygen gas atmosphere

Journal Article · Mon May 01 04:00:00 EDT 1989 · Journal of the American Ceramic Society; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1989.tb06213.x· OSTI ID:5059708

Sato, T; Endo, T; Shimada, M ^[1]

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1. Dept. of Applied Chemistry, Faculty of Engineering, Tohoku Univ., Sendai 980 (JP)

This paper reports that ceria-doped tetragonal zirconia (Ce-TZP)/alumina (Al{sub 2}O{sub 3}) composites were fabricated by sintering at 1450{degrees} to 1600{degrees} C in air, followed by hot isostatic pressing at 1450{degrees} C and 100 MPa in an 80 vol% Ar-20 vol% O{sub 2} gas atmosphere. Dispersion of Al{sub 2}O{sub 3} particles into Ce-TZP was useful in increasing the relative density and suppressing the grain growth of Ce-TZP before hot isostatic pressing, but improvement of the fracture strength and fracture toughness was limited. Postsintering hot isostatic pressing was useful to densify Ce-TZP/Al{sub 2}O{sub 3} composites without grain growth and to improve the fracture strength and thermal shock resistance.

• OSTI ID: 5059708
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 72:5; ISSN 0002-7820; ISSN JACTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
AIR
ALLOYS
ARGON
CERIUM ADDITIONS
CERIUM ALLOYS
CERIUM COMPOUNDS
CHALCOGENIDES
COMMINUTION
COMPOSITE MATERIALS
DISPERSIONS
DOPED MATERIALS
ELEMENTS
FABRICATION
FLUIDS
FRACTURING
GASES
HIGH PRESSURE
HOT PRESSING
MATERIALS
MATERIALS WORKING
MECHANICAL PROPERTIES
MIXTURES
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PRESSING
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
RARE EARTH COMPOUNDS
RARE GASES
SINTERING
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
YIELD STRENGTH
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES