Yittrium granular powder for thermal spray and thermal spray coating produced using the same
US11473181B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | Aug 12, 2021 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Aug 12, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/963
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present disclosure relates to an yttrium-based granular powder for thermal spraying. More particularly, the yttrium-based granular powder is a mixture including one or more yttrium compound powders selected from among Y2O3, YOF, YF3, Y4Al2O9, Y3Al5O12, and YAlO3, and a silica (SiO2) powder. A Y—Si—O intermediate phase is included therein in a content of less than 10 wt %. The thermal spray coating manufactured using the same has a low porosity, and forms a very dense thin film, thus ensuring excellent plasma resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.