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1. WO2000043327 - HIGH-STRENGTH MAGNESIA PARTIALLY STABILIZED ZIRCONIA

Publication Number WO/2000/043327
Publication Date 27.07.2000
International Application No. PCT/US2000/001804
International Filing Date 24.01.2000
Chapter 2 Demand Filed 24.08.2000
IPC
C04B 35/486 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
01based on oxides
48based on zirconium or hafnium oxides or zirconates or hafnates
486Fine ceramics
CPC
C04B 35/486
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
35Shaped ceramic products characterised by their composition
01based on oxide ceramics
48based on zirconium or hafnium oxides, zirconates, ; zircon; or hafnates
486Fine ceramics
Applicants
  • CARPENTER ADVANCED CERAMICS, INC. [US/US]; 13395 New Airport Road Auburn, CA 95602, US (AllExceptUS)
  • STUART, Martin, D. [AU/AU]; AU (UsOnly)
  • TA, Wilson, H. [AU/AU]; AU (UsOnly)
Inventors
  • STUART, Martin, D.; AU
  • TA, Wilson, H.; AU
Agents
  • PACE, Vincent, T. ; Dann, Dorfman, Herrell and Skillman, P.C. Suite 720 1601 Market Street Philadelphia, PA 19103-2307, US
  • PAGET, Hugh C.E.; Mewburn Ellis York House 23 Kingsway London WC2B 6HP, GB
Priority Data
60/117,25026.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) HIGH-STRENGTH MAGNESIA PARTIALLY STABILIZED ZIRCONIA
(FR) CORPS A RESISTANCE ELEVEE A LA MAGNESIE PARTIELLEMENT STABILISEE AU ZIRCONIUM
Abstract
(EN)
A high strength ceramic body and a method of making same are disclosed. The ceramic body is formed of ceramic composition containing 2.8-5.0 % by weight MgO, an effective amount of grain growth inhibiting material, and the balance being essentially zirconia. The crystalline microstructure of the ceramic body comprises grains of cubic zirconia having an average grain size of less than about 30 microns in major dimension, 0.1-8.7 % by volume of discrete particles of the grain growth inhibiting material, and precipitates of tetragonal zirconia having a substantially ellipsoidal shape with a long dimension of about 0.1-0.4 microns.
(FR)
L'invention concerne un corps céramique à résistance élevée et un procédé de fabrication correspondant. Le corps céramique est formé à partir d'une composition céramique contenant de 2,8 à 5,0 % en poids de MgO et une quantité efficace de substance inhibant la croissance des grains, le reste étant principalement constitué de zirconium. La microstructure cristalline du corps céramique comprend des grains de zirconium cubique possédant une granulométrie moyenne de moins de 30 micromètres dans la dimension principale, de 0,1 à 8,7 % en volume de particules discrètes d'une substance inhibant la croissance des grains et, enfin, des précipités de zirconium tétragonal, de forme sensiblement elliptique et dont la dimension principale est de l'ordre de 0,1 à 0,4 micromètres.
Also published as
CZPV2001-2699
ININ/PCT/2001/00563/DEL
NZ512734
YUP-527/01
Other related publications
Latest bibliographic data on file with the International Bureau