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Transformation toughening behavior in ceramics

Conference ·
OSTI ID:5284615
;

The transformation of tetragonal ZrO/sub 2/ to the monoclinic phase can be used to increase the fracture toughness of zirconia bearing ceramics to approximately 20 MPa ..sqrt..m. The attainment of high toughness by transformation toughening is described and experimentally verified in terms of the tetragonal phase stability, transformation zone size, and critical transformation stress for ZrO/sub 2/ systems with selected compositions and microstructures.

Research Organization:
Oak Ridge National Lab., TN (USA)
DOE Contract Number:
AC05-84OR21400
OSTI ID:
5284615
Report Number(s):
CONF-860968-2; ON: DE86015179
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
CRACKS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
FRACTURE PROPERTIES
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MECHANICAL PROPERTIES
MONOCLINIC LATTICES
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
TEMPERATURE DEPENDENCE
TETRAGONAL LATTICES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES