Plasma sprayed mullite coatings on silicon based ceramic materials
US5869146A · kind A · utility
33Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1997 |
| Grant date | Feb 9, 1999 |
| Priority date | — |
| Expiry date | Nov 12, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/252
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Coatings containing at least 85% by volume crystalline mullite with less than 15% by volume of amorphous material and mullite dissociation phases are plasma sprayed onto the surface of a silicon based ceramic substrate by closely controlling the plasma spray parameters including the mullite feed stock and its particle size, the nozzle outlet stand-off distance, movement of the substrate past the plasma flow, back side heating of the substrate and the powder feed rate through the plasma spray gun.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.