| 发明名称 | Alumina sintered body, abrasive grains, and grindstone | ||
| 摘要 | Provided are an alumina sintered compact containing a titanium compound and an iron compound, wherein the total amount of the TiO2-equivalent content of the titanium compound, the Fe2O3-equivalent content of the iron compound and the alumina content is at least 98% by mass, the total amount of the TiO2-equivalent content of the titanium compound and the Fe2O3-equivalent content of the iron compound is from 5 to 13% by mass, and the ratio by mass of the TiO2-equivalent content of the titanium compound to the Fe2O3-equivalent content of the iron compound (TiO2/Fe2O3) is from 0.85/1.15 to 1.15/0.85; and an abrasive grain and a grain stone using the alumina sintered compact. | ||
| 申请公布号 | US8894730(B2) | 申请公布日期 | 2014.11.25 |
| 申请号 | US201113882593 | 申请日期 | 2011.10.18 |
| 申请人 | Showa Denko K.K. | 发明人 | Tomikawa Shinichiro;Miyazawa Hirokazu;Iemura Takeshi |
| 分类号 | B24D3/00;B24D11/00;B24D18/00;C09K3/14;C04B35/645;C04B35/626;C04B35/111;B24D3/04 | 主分类号 | B24D3/00 |
| 代理机构 | Sughrue Mion, PLLC | 代理人 | Sughrue Mion, PLLC |
| 主权项 | 1. An alumina sintered compact containing a titanium compound and an iron compound, wherein: a total amount of a TiO2-equivalent content of the titanium compound, a Fe2O3-equivalent content of the iron compound and the alumina content is at least 98% by mass, a total amount of the TiO2-equivalent content of the titanium compound and the Fe2O3-equivalent content of the iron compound is from 5 to 13% by mass, and a ratio by mass of the TiO2-equivalent content of the titanium compound to the Fe2O3-equivalent content of the iron compound (TiO2/Fe2O3) is from 0.85/1.15 to 1.15/0.85, wherein the alumina sintered compact comprises main crystal phases, each of the main crystal phases is composed of a corundum crystal and a FeTiAlO5 grain exists in a grain boundary of each of the main crystal phases. | ||
| 地址 | Tokyo JP | ||