Title:
DIELECTRIC MATERIAL
Document Type and Number:
WIPO Patent Application WO/2014/112486
Kind Code:
A1
Abstract:
Provided is a dielectric material in which signs of insulation damage can be detected before or during use, and therefore the insulation damage can be predicted in advance. Such a dielectric material comprises a compound sintered body in which conductive particles are dispersed in an insulating material, the conductive particles including a particle diameter (D10), such that the cumulative volume percentage in the volume particle size distribution is 10% by volume, that is no greater than 0.2 µm, and a particle diameter (D90), such that the cumulative volume percentage in the volume particle size distribution is 90% by volume, that is at least 2 µm, the ratio (D90/D10) of the particle size (D90) having a cumulative volume percentage of 90% by volume to the particle size (D10) having a cumulative volume percentage of 10% by volume being at least 3.0, and the ratio (D90/D50) of the particle size (D90) having a cumulative volume percentage of 90% by volume to the particle size (D50) having a cumulative volume percentage of 50% by volume being at least 1.4.
Inventors:
OOTOMO MEGUMI (JP)
YOSHIOKA YOSHIKI (JP)
YOSHIOKA YOSHIKI (JP)
Application Number:
PCT/JP2014/050471
Publication Date:
July 24, 2014
Filing Date:
January 14, 2014
Export Citation:
Assignee:
SUMITOMO OSAKA CEMENT CO LTD (JP)
International Classes:
H01B3/00; B23Q3/15; H01L21/683; H02N13/00
Foreign References:
| JP2000332090A | 2000-11-30 | |||
| JPH10335438A | 1998-12-18 | |||
| JPH07267722A | 1995-10-17 | |||
| JPH10326824A | 1998-12-08 | |||
| JP2006351390A | 2006-12-28 |
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
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