Microwave dielectric ceramic composition
US6096672A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1998 |
| Grant date | Aug 1, 2000 |
| Priority date | — |
| Expiry date | Aug 13, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/486
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A microwave dielectric composition, comprising a basic composition, represented by the following formula: EQU (Pb(1-x)Ca(x))(Zr(1-y)Sn(y))O(3) wherein x and y are molar ratios in the relation of 0.15<x<0.40 and 0.15<y<0.50, and a sintering aid represented by the following formula: EQU a ZnO+b Sb.sub.2 O.sub.3 wherein a and b are percentages relative to the total weight of the basic composition, in the relation of 0<a+b<0.05 weight %. The composition can be sintered at relatively low temperature and are superior in dielectric constant and quality factor. The low-temperature sintering yields the effects of allowing the sinters to have a fine structure and be of high long-term reliability, including high-temperature resistance and humidity resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.