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Metastable zirconia phases prepared from zirconium alkoxide and yttrium acetylacetonate; Part 2: Hot isostatic pressing of tetragonal zirconia solid solution powders

Journal Article · · Materials Research Bulletin; (United States)
; ;  [1]; ;  [2]; ;  [3]
  1. Doshisha Univ., Kyoto (Japan). Lab. of Ceramic Science
  2. Osaka Prefectural Institute of Industrial Technology (Japan)
  3. Osaka Cement Co., Ltd. (Japan)
+ Show Author Affiliations
Metastable ZrO[sub 2] (tetragonal) solid solution powders with 2 to 5 mol% Y[sub 2]O[sub 3] prepared from zirconium isopropoxide and yttrium acetylacetonate have been isostatically hot pressed for 1 h at 1,230 C under 196 MPa. Dense sintered materials with an average grain size of 0.3 [mu]m are fabricated from powders containing 2 and 2.5 mol% Y[sub 2]O[sub 3]. High fracture toughness (13.5 MPam[sup 1/2]) and excellent bending strength (1,320 MPa) are achieved in these materials. The materials, especially with 5 mol% Y[sub 2]0[sub 3] addition, exhibit high ionic conductivity at high temperatures. The conductivity at 800 C is evaluated to be 1.8[times]10[sup [minus]2] S/cm.
OSTI ID:
7274336
Journal Information:
Materials Research Bulletin; (United States), Journal Name: Materials Research Bulletin; (United States) Vol. 29:3; ISSN MRBUAC; ISSN 0025-5408
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
CHALCOGENIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FABRICATION
FRACTURE PROPERTIES
GRAIN SIZE
HOT PRESSING
IONIC CONDUCTIVITY
MATERIALS WORKING
MECHANICAL PROPERTIES
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PHYSICAL PROPERTIES
PRESSING
SIZE
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES