Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Zirconia ceramic article toughened with SIC whiskers

Patent ·
OSTI ID:6265458
; ; ;
A ceramic composite is described characterized by improved fracture toughness comprising a matrix phase consisting essentially of tetragonal ZrO/sub 2/ and a ZrO/sub 2/ stabilizer selected from the group consisting of MgO, CaO, Y/sub 2/O/sub 3/, and oxides of rare earth elements from the group: La, Ce Nd, Sm, Gd, Dy, Er and Yb and a whisker reinforcement phase constituting 5-20 volume percent of the composite and consisting of silicon carbide whiskers, the whiskers having a monocrystalline structure, a diameter in the range of 0.5-3 ..mu..m, a length in the range of 10-30 ..mu..m, and an aspect ratio not exceeding about 20, the composite exhibiting a fracture toughness (K/sub IC/) at 25/sup 0/C at least 1.25 times the fracture toughness of the matrix phase when free of the whisker reinforcement phase.
Assignee:
Corning Glass Works, Corning, NY
Patent Number(s):
US 4804643
OSTI ID:
6265458
Country of Publication:
United States
Language:
English

Similar Records

Tetragonal zirconia polycrystals reinforced with SiC whiskers
Journal Article · Fri Feb 28 23:00:00 EST 1986 · J. Am. Ceram. Soc.; (United States) · OSTI ID:5850920
Toughening behavior in SiC whisker reinforced alumina
Conference · Fri Dec 31 23:00:00 EST 1982 · OSTI ID:6466587
Silicon carbide whisker-zirconia reinforced mullite and alumina ceramics
Patent · Wed Dec 31 23:00:00 EST 1986 · OSTI ID:866216

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CARBIDES
CARBON COMPOUNDS
CERAMICS
CERIUM COMPOUNDS
CERIUM OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
CRYSTALS
DYSPROSIUM COMPOUNDS
DYSPROSIUM OXIDES
ERBIUM COMPOUNDS
ERBIUM OXIDES
FRACTURE PROPERTIES
GADOLINIUM COMPOUNDS
GADOLINIUM OXIDES
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MATERIALS
MATRIX MATERIALS
MECHANICAL PROPERTIES
MONOCRYSTALS
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
SAMARIUM COMPOUNDS
SAMARIUM OXIDES
SILICON CARBIDES
SILICON COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WHISKERS
YTTERBIUM COMPOUNDS
YTTERBIUM OXIDES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES