Part comprising a substrate and an environmental barrier
US11713283B2 · kind B2 · utility
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Key dates
| Filing date | Jan 4, 2018 |
| Grant date | Aug 1, 2023 |
| Priority date | — |
| Expiry date | Feb 13, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D5/288
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A part includes a substrate, having, adjacent to a surface of the substrate, at least a portion that is made from a material that contains silicon, and an environmental barrier formed on the surface of the substrate, the environmental barrier including at least a first layer including a rare earth disilicate of formula REa2Si2O7 present at a molar content lying in the range 70% to 99.9%, where REa is a rare earth element; and at least one rare earth oxide of formula REb2O3 present at a molar content lying in the range 0.1% to 30%, where REb is a rare earth element different from REa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.