Hafnon and zircon environmental barrier coatings for silicon-based components
US11866379B2 · kind B2 · utility
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6References
20Claims
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Key dates
| Filing date | Aug 13, 2021 |
| Grant date | Jan 9, 2024 |
| Priority date | — |
| Expiry date | Jan 21, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for coating a substrate includes spraying a combination of powders. The combination of powders includes: Hf0.5Si0.5O2; Zr0.5Si0.5O2; and, optionally, at least one of HfO2 and ZrO2. A molar ratio of said Hf0.5Si0.5O2 and HfO2 combined to said Zr0.5Si0.5O2 and ZrO2 combined is from 2:1 to 4:1. A molar ratio of said Hf0.5Si0.5O2 to said HfO2 is at least 1:3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.