Ceramic component for electrodes
US4180484A · kind A · utility
5Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 14, 1978 |
| Grant date | Dec 25, 1979 |
| Priority date | — |
| Expiry date | Jun 14, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B7/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A ceramic component suitable for preparing MHD generator electrodes consists of HfO.sub.2 and sufficient Tb.sub.4 O.sub.7 to stabilize at least 60 volume percent of the HfO.sub.2 into the cubic structure. The ceramic component may also contain a small amount of PrO.sub.2, Yb.sub.2 O.sub.3 or a mixture of both to improve stability and electronic conductivity of the electrode. The component is highly resistant to corrosion by molten potassium seed and molten coal slag in the MHD fluid and exhibits both ionic and electronic conductivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.