Surface type heating element having controlled oxide layer and manufacturing method thereof
US11832358B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 11, 2020 |
| Grant date | Nov 28, 2023 |
| Priority date | — |
| Expiry date | Mar 28, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/017
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Discussed are a surface type heating element which generates heat using electricity and a method of manufacturing the surface type heating element. The surface type heating element includes a NiCr alloy and has an oxygen content of 1 to 4 wt %, so that it can be used even at a high operating temperature of 400° C. or more, suppresses the elution of the material itself, has high fracture toughness, a low coefficient of thermal expansion, and heat resistance, and furthermore, ensures conductivity by having improved adhesive strength with respect to at least one of a substrate and an insulating layer, and controlled electrical resistivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.