| 发明名称 | Magnetic material and coil component using same | ||
| 摘要 | A magnetic material suitable for a coil component has multiple metal grains constituted by Fe—Si-M soft magnetic alloy (where M is a metal element that oxidizes more easily than Fe) and oxide film formed on the surface of the metal grains, wherein such magnetic material includes a grain compact having bonding parts where adjacent metal grains are bonded together via the oxide film formed on their surface, and bonding parts where metal grains are directly bonded together in areas where oxide film does not exist. The magnetic material is capable of improving both insulation resistance and magnetic permeability. | ||
| 申请公布号 | US9030285(B2) | 申请公布日期 | 2015.05.12 |
| 申请号 | US201114113801 | 申请日期 | 2011.10.13 |
| 申请人 | Taiyo Yuden Co., Ltd. | 发明人 | Matsuura Hitoshi;Otake Kenji |
| 分类号 | H01F5/00;H01F27/255;H01F1/24;H01F1/33;H01F41/02;C22C38/34;H01F1/147 | 主分类号 | H01F5/00 |
| 代理机构 | Law Office of Katsuhiro Arai | 代理人 | Law Office of Katsuhiro Arai |
| 主权项 | 1. A magnetic material containing multiple metal grains constituted by soft magnetic alloy and oxide film formed on a surface of the metal grains, which soft magnetic alloy includes Fe and at least one alloy element that oxidizes more easily than Fe, wherein the magnetic material forms a grain compact having first bonding parts where adjacent metal grains are contacted and directly bonded together, and second bonding parts where adjacent metal grains are bonded together via the oxide film formed around the entire surface of said adjacent metal grains other than the first bonding parts, and wherein the at least one alloy element that oxidizes more easily than Fe is contained in the soft magnetic alloy in total in an amount of 2.5 to 22 percent by weight, wherein the at least one alloy element that oxidizes more easily than Fe includes a metal element which is contained in the soft magnetic alloy in an amount of 2.0 to 15 percent by weight. | ||
| 地址 | Tokyo JP | ||