公开(公告)号：US20240262751A1

公开(公告)日：2024-08-08

申请号：US18420329

申请日：2024-01-23

Applicant: The Swatch Group Research and Development Ltd

Inventor： Marta FORNABAIO ,  Lucie TABARD ,  Arnaud ACTIS-DATTA

IPC: C04B35/48 ,  C04B35/626 ,  C04B35/632 ,  C04B35/638 ,  C04B35/64

CPC classification number: C04B35/48 ,  C04B35/62695 ,  C04B35/632 ,  C04B35/638 ,  C04B35/64 ,  C04B2235/3217 ,  C04B2235/3225 ,  C04B2235/3246 ,  C04B2235/3248 ,  C04B2235/3275 ,  C04B2235/6567 ,  C04B2235/6581 ,  C04B2235/9661

Abstract: A coloured article made of a ceramic and including: a high-performance zirconia, present at between 80% and 99.5% by weight based on the total weight of the ceramic, pigments, present at between 2.5% and 20% by weight based on the total weight of the ceramic, and containing one or more oxides selected from the list consisting of Al, Si, Fe, Cu, Co, Ni, Mn, Zn, Cr, Ce, V, Nd, Pr and Ti oxides, including mixed oxides from this list. The total percentage by weight of the high-performance zirconia, pigments and any impurities are 100%, and the ceramic has a hardness HV30 greater than 1100 HV and a toughness greater than 12 MPav√m. Also, a method for manufacturing this article.

公开(公告)号：US20190092691A1

公开(公告)日：2019-03-28

申请号：US16082358

申请日：2017-03-09

Applicant: The Swatch Group Research and Development Ltd ,  EMPA, Swiss Federal Laboratories for Materials Testing and Research

Inventor： Henning LUEBBE ,  Roman KUBRIN ,  Gurdial BLUGAN ,  Jakob KUEBLER ,  Stewes BOURBAN ,  Arnaud ACTIS-DATTA

IPC: C04B35/111 ,  C04B35/626

Abstract: A polycrystalline ceramic solely formed based on alumina, on chromium oxide and on magnesium oxide, where the polycrystalline ceramic contains between 0.8% and 1.2% of chromium oxide by total weight of the polycrystalline ceramic and between 0.03% and 0.09% of magnesium oxide by total weight of the polycrystalline ceramic, making it possible to obtain a red ceramic with a toughness (Kc) at least equal to 2.8 MPa·m1/2.