Cermet materials
US4354964A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1980 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | Nov 10, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B1/16
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An electrically conducting cermet comprises a sintered compact of refractory oxide granules such as alumina granules having diameters of from 50 to 800 microns and a conductive network extending through the cermet and provided by a layer of one or more of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, iron, cobalt or nickel surrounding the individual oxide granules and constituting a volume fraction of 0.04 to 0.2 of the total cermet, wherein particles of one or more of said metals are dispersed within the oxide granules in a volume fraction of 0.01 to 0.15 of the granules, which granules also contain 0.01 to 0.25 percent by weight of magnesium oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.