Metal oxide dielectric dense bodies, precursor powders therefor, and methods for preparing same
US5188886A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1991 |
| Grant date | Feb 23, 1993 |
| Priority date | — |
| Expiry date | Sep 27, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24917
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A metal oxide dielectric dense body, comprising (I) grains having a predominant crystalline phase (a) a primary metal oxide selected from the group consisting of silicon and magnesium oxide and (b) optionally a secondary metal oxide selected from the group consisting of aluminum and zinc oxide and (II) between about 1 and about 20 atom % bismuth, vanadium, or boron oxide or combination thereof, discontinuously located at the boundaries of the crystalline grains or as inclusions in the crystalline grains, the atom %'s based on the total atoms of bismuth, vanadium, boron, silicon, magnesium, aluminum, and zinc. The dense body has a density which is at least 95% of theoretical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.