Electrode material for a spark plug and method of making the same
US9337624B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 8, 2013 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Feb 2, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T21/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrode material that may be used in spark plugs and other ignition devices for igniting an air/fuel mixture in an engine. The electrode material has a metal ceramic composite structure and includes a particulate component embedded or dispersed within a matrix component such that the electrode material has a multi-phase microstructure. In an exemplary embodiment, the matrix component includes platinum (Pt) and one or more additive metals like nickel (Ni) or palladium (Pd), and the particulate component includes an electrically conductive ceramic, such as titanium diboride (TiB2). A liquid phase or a solid phase sintering process may be used, depending on the particular constituency of the electrode material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.