| 发明名称 | Zirconia-alumina ceramic materials | ||
| 摘要 | The present invention provides a ceramic material comprising: a first phase comprising zirconia, yttrium and cerium, wherein the yttrium and cerium are present in a molar ratio of 0.15 to 0.5 and in a combined amount of 5 to 15 mol %, a second phase comprising alumina, and a third phase comprising metal aluminate platelets. | ||
| 申请公布号 | US8927446(B2) | 申请公布日期 | 2015.01.06 |
| 申请号 | US200913381501 | 申请日期 | 2009.06.30 |
| 申请人 | Aktiebolaget SKF | 发明人 | Kahlman Lars;Vieillard Charlotte;Sekulic Jelena;Johansen Knut Henrik;Schjelderup Hans Hillen |
| 分类号 | C04B35/119;F16C33/32;F16C33/58;C04B35/488;C04B35/626;C04B35/645;C22C33/02;C22C38/00;C22C38/02;C22C38/04;C22C38/22;C22C38/24;B22F9/08 | 主分类号 | C04B35/119 |
| 代理机构 | Buchanan Ingersoll & Rooney PC | 代理人 | Buchanan Ingersoll & Rooney PC |
| 主权项 | 1. A roller bearing comprising an inner ring, and outer ring, and at least one rolling element, a rolling surface of which is formed from a ceramic material, wherein said ceramic material consists essentially of 50 to 75 wt % of a zirconia matrix of zirconia, yttrium and cerium, 25 to 49.5 wt % of alumina, 0.5 to 5 wt % of metal aluminate platelets, and any unavoidable impurities, and wherein the yttrium and cerium are present in the zirconia matrix in a molar ratio of 0.15 to 0.5 and in a combined amount of 5 to 15 mol %. | ||
| 地址 | Gothenburg SE | ||