Environmental barrier coating material and coating structure and ceramic structure using the same
US7138183B2 · kind B2 · utility
12Cited by
4References
19Claims
0Family size
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Key dates
| Filing date | Jan 12, 2005 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Jan 12, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/5021
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An environmental barrier coating material comprising one or more constituents selected from a group consisting of hafnia; hafnia stabilized by one or more rare-earth oxides and/or silica; zirconia-containing hafnia; and zirconia-containing hafnia stabilized by one or more rare-earth oxides and/or silica, which when formed as a coating structure for covering a substrate which has a low thermal expansion coefficient, has hafnon (HfSiO4) serving as a first layer directly formed on the substrate, and hafnia with which the first layer is coated as a second layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.