Back to results
US 2024/0190774 A1Published application
Ceramic sintered body and ceramic powder
AssigneesKYOCERA Corporation, Daiichi Kigenso Kagaku Kogyo Co., Ltd.
InventorsTakanori NISHIHARA, Hideo KIMURA
Life of this patent
Estimating the term…
Abstract
The ceramic sintered body of the present disclosure contains zirconia as a main component and includes sintered body crystals and a grain boundary part located among the sintered body crystals. One of the sintered body crystals contains cerium. A content of the cerium is less than 8.0% by mass. The grain boundary part contains silicon dioxide.
Claims14
A ceramic sintered body containing
- zirconia as a main component, and comprising
- sintered body crystals;
- and
- a grain boundary part located among the sintered body crystals, wherein
- one of the sintered body crystals comprise cerium,
- a content of the cerium is less than 8.0% by mass, and
- the grain boundary part contains silicon dioxide.
4 more elements
Ceramic powder comprising,
- zirconia included in a proportion of 90 to 95% by mass and alumina included in a proportion of 5 to 10% by mass when a total amount of the zirconia and the alumina is 100 parts by mass, and
- silicon dioxide included in a proportion of 0.01 to 0.1 parts by mass when the total amount of the zirconia and the alumina is 100 parts by mass,
- wherein the zirconia includes partially stabilized zirconia containing 1.5 to 2.8 mol % of Y2O3 and partially stabilized zirconia containing 8 to 12 mol % of CeO2, and
- a proportion of the partially stabilized zirconia containing Y2O3 to the total amount of the zirconia is 45 to 55% by mass.
1 more element
Dependencies are inferred from the claim text.