Improvement of mechanical properties by the formation of a grain boundary phase in ZrO{sub 2} - 3 mol% Y{sub 2}O{sub 3} - Al{sub 2}O{sub 3} ceramics

Conference · Sat Dec 31 00:00:00 EST 1994

OSTI ID:62849

Tsubakino, H; Fujiwara, T; Yamamoto, A; Ioku, S ^[1]

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1. Himeji Institute of Technology, Hyogo (Japan)

The effect of alumina addition on bending strength and fracture toughness in ZrO{sub 2}-3mol% Y{sub 2}O{sub 3} (PSZ) was studied by a combination of three point bending tests, an indentation technique, dilatometry, and transmission electron microscopy. The addition of alumina to PSZ improves these mechanical properties. This improvement is not related to the variation in density and grain size caused by the addition of alumina, but is a result of the formation of an amorphous phase located at the grain boundaries. This phase contains alumina, silica and yttria.

• OSTI ID: 62849
• Report Number(s): CONF-940315-; TRN: 95:000917-0020
• Resource Relation: Conference: Japan Fine Ceramics Center (JFCC) workshop: materials processing and design through better control of grain boundaries: emphasizing fine ceramics II, Koda-cho (Japan), 17-19 Mar 1994; Other Information: PBD: 1994; Related Information: Is Part Of Ceramic transactions - Materials processing and design: Grain-boundary-controlled properties of fine ceramics II. Volume 44; Niihara, Koichi; Ishizaki, Kozo; Isotani, Mitsuo [eds.]; PB: 498 p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
METALLURGICAL EFFECTS
YTTRIUM OXIDES
FLEXURAL STRENGTH
FRACTURE PROPERTIES
ZIRCONIUM OXIDES
CERAMICS
MECHANICAL PROPERTIES
MICROSTRUCTURE
POWDER METALLURGY
DILATOMETRY
GRAIN BOUNDARIES
TRANSMISSION ELECTRON MICROSCOPY
GRAIN SIZE