Formation and sintering of yttria-doped tetragonal zirconia with 50 mol% alumina prepared by the hydrazine method

Journal Article · Wed Jun 01 04:00:00 EDT 1994 · Journal of the American Ceramic Society; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1994.tb09783.x· OSTI ID:7267832

Kimoto, Shinya; Hirota, Ken; Yamaguchi, Osamu ^[1]; Kume, Hideki; Inamura, Suguru; Miyamoto, Hiroki ^[2]

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1. Doshisha Univ., Kyoto (Japan). Dept. of Applied Chemistry
2. Osaka Prefectural Inst. of Industrial Technology (Japan)

Al[sub 2]O[sub 3]/Y[sub 2]O[sub 3]-doped ZrO[sub 2] composite powders with 50 mol% Al[sub 2]O[sub 3] prepared by the hydrazine method. As-prepared powders are mixtures of AlO(OH) gel and amorphous ZrO[sub 2] solid solutions containing Y[sub 2]O[sub 3] and Al[sub 2]O[sub 3]. The formation process leading to [alpha]-Al[sub 2]O[sub 3]-t-ZrO[sub 2] composite powders is examined. Hot isostatic pressing is performed for 2 h at 1,400 C under 196 MPa using [theta]-Al[sub 2]O[sub 3]-t-ZrO[sub 2] composite powders. The resulting dense, sintered [alpha]-Al[sub 2]O[sub 3]-t-ZrO[sub 2] composites show excellent mechanical strength.

• OSTI ID: 7267832
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 77:6; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
360603* -- Materials-- Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CHEMICAL PREPARATION
COMPOSITE MATERIALS
DATA
EXPERIMENTAL DATA
FABRICATION
HOT PRESSING
INFORMATION
MATERIALS
MATERIALS WORKING
MECHANICAL PROPERTIES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PRESSING
SINTERING
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES