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US 12,735,362 B2Granted
Zirconia composition, pre-sintered body and sintered body, and method of producing the same
AssigneeKuraray Noritake Dental Inc.
InventorYoshihisa Ito
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Abstract
A composition comprises a zirconia powder, in which 55% or more thereof is monoclinic, and a stabilizer capable of suppressing phase transition of zirconia. An average particle diameter of zirconia particles and particles of the stabilizer is 0.06 μm to 0.17 μm. At least a portion of the stabilizer does not form a solid solution with zirconia.
Claims20
A pre-sintered body, wherein the pre-sintered body is produced by firing a pressed body of a composition at a temperature of 800° C. to 1200° C.,
- the composition comprising:
- zirconia in which 70% or more thereof is monoclinic;
- a stabilizer capable of suppressing phase transition of zirconia;
- wherein an average particle diameter of zirconia particles and particles of the stabilizer is from 0.11 to 0.15 μm;
- and
- wherein at least a portion of the stabilizer does not form a solid solution with zirconia.
3 more elements
Dependencies are inferred from the claim text.