Ceramic heater element, ceramic heater, and glow plug
US9247585B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2011 |
| Grant date | Jan 26, 2016 |
| Priority date | — |
| Expiry date | Jul 13, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/027
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A ceramic heater element 10 includes an insulating substrate 101, and a heating resistor 102 embedded in the insulating substrate 101. The insulating substrate 101 contains a main phase formed of β-SiAlON or a multiphase SiAlON of β-SiAlON and α-SiAlON; a grain boundary phase containing a rare earth element; and a silicide of at least one species selected from among Cr, W, Mo, V, and Fe. The heating resistor 102 contains a main phase formed of an electrically conductive compound containing at least one species selected from among silicide, nitride, and carbide of Mo, and silicide, nitride, and carbide of W; β-SiAlON or a multiphase SiAlON of β-SiAlON and α-SiAlON; and a grain boundary phase containing a rare earth element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.