Roter Sinterkörper und Verfahren zur Herstellung davon

Details

Veröffentlichungs-Nr.

EP4772490

Anmeldetag

5. August 2024

Veröffentlichung

6. März 2025

Rechtsraum

EP

Abstract

Provided is at least one of a sintered body of zirconia and a method for producing the same; the sintered body exhibits a red color mainly in reflected light, with the red color being based on the coloring of trivalent cerium, and the sintered body exhibits a bright red color under daylight. A sintered body of zirconia, the sintered body containing cerium, aluminum, yttrium and a toning element, wherein a content of the cerium, calculated as CeO₂, is 1.5 mol% or greater and 6.0 mol% or less, a content of the aluminum, calculated as Al₂O₃, is 0.05 mol% or greater and 4.0 mol% or less, a content of the yttrium, calculated as Y₂O₃, is 2.0 mol% or greater and 6.0 mol% or less, a content of the toning additive element, calculated as an oxide, is greater than 0 mol% and 4.0 mol% or less, the cerium includes trivalent cerium (Ce³⁺), the toning element is at least one of alkaline earth metal elements and rare earth elements other than yttrium or cerium, and a ratio of an ionic radius of the toning element to an ionic radius of tetravalent zirconium (Zr⁴⁺) is greater than 1.00 and 1.60 or less.

Anmelder

Firma

Tosoh Corporation

Land

🇯🇵 Japan