Sintering and characterization of polycrystalline monoclinic, tetragonal, and cubic zirconia

Journal Article · Sat Aug 01 04:00:00 EDT 1992 · Journal of the American Ceramic Society; (United States)

OSTI ID:7018427

Cutier, R A; Reynolds, J R; Jones, A ^[1]

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1. Ceramatec, Inc., Salt Lake City, UT (United States)

This paper reports that polycrystalline monoclinic (m), tetragonal (t), and cubic (c) ZrO[sub 2], sintered at 1500[degrees]C, were annealed in the cubic stability field and rapidly cooled to permit the displacive c [yields] t[sup 1] transformation to occur in compositions containing 0-6 mol% Y[sub 2]O[sub 3]. The bulk fracture toughness of coarse-grained ([gt] 25[mu]m) m, t[sup 1], and c zirconias were compared with conventionally sintered, fine-grained (typically less than 1 [mu]m) materials. The ferroelastic monoclinic and tetragonal zirconias were more than twice as tough as paraelastic cubic zirconia.

• OSTI ID: 7018427
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 75:8; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
CHALCOGENIDES
CHEMICAL COMPOSITION
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
FABRICATION
FINE STRUCTURE
FRACTURE PROPERTIES
GRAIN SIZE
HEAT TREATMENTS
MATERIALS WORKING
MECHANICAL PROPERTIES
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHASE STABILITY
POLYCRYSTALS
SINTERING
SIZE
STABILITY
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
TETRAGONAL LATTICES
THERMOMECHANICAL TREATMENTS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES