| 发明名称 | Spark plug | ||
| 摘要 | A spark plug including an insulator containing an Al component, in terms of oxides, 89 mass % or more and a Ti component, in terms of oxides, more than 0 mass % and 0.2 mass % or less, characterized in that the insulator is formed of an alumina-based sintered material which contains, in a grain boundary phase present between alumina crystal grains, a first crystal phase containing at least one species selected from among an La component, an Nd component, a Pr component, a Y component, an Er component, a Yb component, and an Lu component, and a second crystal phase containing at least one species of Group 2 element components, an Al component and an Si component. | ||
| 申请公布号 | US9385511(B2) | 申请公布日期 | 2016.07.05 |
| 申请号 | US201314420819 | 申请日期 | 2013.08.23 |
| 申请人 | NGK SPARK PLUG CO., LTD. | 发明人 | Takeuchi Hiroki;Yokoyama Yutaka;Tanaka Kuniharu;Mitsuoka Takeshi;Honda Toshitaka;Kurono Hirokazu;Takaoka Katsuya;Uegaki Hironori |
| 分类号 | C04B35/10;H01T13/38;C04B35/111;H01T13/60;G01R31/12;G01R31/14 | 主分类号 | C04B35/10 |
| 代理机构 | Sughrue Mion, PLLC | 代理人 | Sughrue Mion, PLLC |
| 主权项 | 1. A spark plug having an insulator containing an Al component, in terms of oxides, 89 mass % or more and a Ti component, in terms of oxides, more than 0 mass % and 0.2 mass % or less, characterized in that the insulator is formed of an alumina-based sintered material which contains, in a grain boundary phase present between alumina crystal grains, a first crystal phase containing at least one species selected from among an La component, an Nd component, a Pr component, a Y component, an Er component, a Yb component, and an Lu component, and a second crystal phase containing at least one species of Group 2 element components, the Group included in the periodic table defined by Recommendations 1990, IUPAC, an Al component, and an Si component. | ||
| 地址 | Aichi JP | ||