Sintered body, powder and method for producing the same
US12391621B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2020 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Sep 11, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/9653
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
There is provided a raw material for a zirconia sintered body formed by pressureless sintering and having a high fracture toughness value measured by an SEPB method, a sintered body formed from the raw material, and a method for producing at least one of the raw material and the sintered body. Also provided is a sintered body that includes zirconia that contains a stabilizer and having a monoclinic fraction of 0.5% or more. Such a sintered body is produced by a method including using a powder that contains a stabilizer and zirconia with a monoclinic fraction of more than 70%, wherein monoclinic zirconia has a crystallite size of more than 23 nm and 80 nm or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.