Silicon nitride coating compositions
US6214754A · kind A · utility
14Cited by
9References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 21, 1999 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Sep 21, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/252
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to thick film coating compositions which adhere particularly well to silicon nitride substrates and accordingly may be used in the manufacture of heater apparatus using such substrates. Such thick film coating materials comprise a borosilicate glass matrix containing an amount of a metal oxide sufficient to enable said thick film coating material to react with a silicon nitride substrate to promote adherence thereto; and desirably further contains ceramic powders and/or metal or metal-containing compound powders and/or flakes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.