发明名称 |
Dielectric material |
摘要 |
A dielectric material which is able to detect a sign of insulation breakdown before use or while in use, and thus is able to predict the insulation breakdown in advance is provided. Such a dielectric material is made of a composite sintered compact in which conductive particles are dispersed in an insulating material, in which in the conductive particles, a particle diameter D10 having a cumulative volume percentage of 10% by volume in a volume particle size distribution is 0.2 μm or less, a particle diameter D90 having a cumulative volume percentage of 90% by volume is 2 μm or less, a ratio (D90/D10) of the particle diameter D90 having a cumulative volume percentage of 90% by volume to the particle diameter D10 having a cumulative volume percentage of 10% by volume is 3.0 or more, and a ratio (D90/D50) of the particle diameter D90 having a cumulative volume percentage of 90% by volume to the particle diameter D50 having a cumulative volume percentage of 50% by volume is 1.4 or more. |
申请公布号 |
US9378862(B2) |
申请公布日期 |
2016.06.28 |
申请号 |
US201414760160 |
申请日期 |
2014.01.14 |
申请人 |
Sumitomo Osaka Cement Co., Ltd. |
发明人 |
Ootomo Megumi;Yoshioka Yoshiki |
分类号 |
C04B35/00;H01B3/12;C04B35/10;C04B35/505;C04B35/584;H01B3/00 |
主分类号 |
C04B35/00 |
代理机构 |
Wood, Herron & Evans, LLP |
代理人 |
Wood, Herron & Evans, LLP |
主权项 |
1. A dielectric material made of a composite sintered compact in which conductive particles are dispersed in an insulating material,
wherein in the conductive particles, a particle diameter D10 having a cumulative volume percentage of 10% by volume in a volume particle size distribution is 0.2 μm or less, a particle diameter D90 having a cumulative volume percentage of 90% by volume is 2 μm or less, a ratio (D90/D10) of the particle diameter D90 having a cumulative volume percentage of 90% by volume to the particle diameter D10 having a cumulative volume percentage of 10% by volume is 3.0 or more, and a ratio (D90/D50) of the particle diameter D90 having a cumulative volume percentage of 90% by volume to a particle diameter D50 having a cumulative volume percentage of 50% by volume is 1.4 or more. |
地址 |
Tokyo JP |