Method of manufacturing a ruthenium-based spark plug electrode material into a desired form and a ruthenium-based material for use in a spark plug
US8979606B2 · kind B2 · utility
4Cited by
85References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 20, 2013 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Jun 20, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12229
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of making an electrode material for use in spark plugs and other ignition devices including industrial plugs, aviation igniters, glow plugs, or any other device that is used to ignite an air/fuel mixture in an engine. The electrode material is a ruthenium-based material that includes ruthenium as the single largest constituent. The disclosed method includes hot-forming a layered structure that includes a ruthenium-based material core, an interlayer having a refractory metal disposed over the ruthenium-based material core, and a nickel-based cladding disposed over the interlayer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.