Dielectric ceramic composition for high frequencies and method for preparation of the same
US5561090A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1995 |
| Grant date | Oct 1, 1996 |
| Priority date | — |
| Expiry date | Jul 12, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/49
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved dielectric ceramic composition for high frequencies and a method for preparation of the same, capable of being advantageously used for a dielectric resonator, a material of a substrate for an integrated circuit and the like in high frequency regions, which consists of a main component of ZrO.sub.2, TiO.sub.2, and SnO.sub.2 and a sintering aid component of ZnO, NiO, Nb.sub.2 O.sub.5, and Mn(NO.sub.3).sub.2 4H.sub.2. The main component consists of 38 to 58 wt % of ZrO.sub.2, 22 to 43 wt % of TiO.sub.2, and 9 to 26 wt % of SnO.sub.2. And the sintering aid component consists of, with respect to the total amount of the main component, less than 7 wt % of ZnO, less than 10 wt % of NiO, less than 7 wt % of Nb.sub.2 O.sub.5, and less than 4 wt %, of Mn(NO.sub.3).sub.2 4H.sub.2 O, calculated on the basis of the weight ratio of MnO.sub.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.