Environmental resistant coating member
US10889526B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 21, 2017 |
| Grant date | Jan 12, 2021 |
| Priority date | — |
| Expiry date | Sep 27, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/6033
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An environmental resistant coating member includes a SiC long fiber-reinforced ceramics substrate and an environmental barrier coating layer provided on the whole surface of the SiC long fiber-reinforced ceramics substrate. The environmental barrier coating layer includes a SiAlON bonding layer laminated on the SiC long fiber-reinforced ceramics substrate, a mullite layer laminated on the SiAlON bonding layer, a reaction inhibition layer laminated on the mullite layer, and a gradient layer formed on the reaction inhibition layer that gradually changes from a rare-earth disilicate to a rare-earth monosilicate. The reaction inhibition layer includes at least one of an alumina layer, a garnet layer, and a rare-earth (mono)silicate layer. When the reaction inhibition layer includes two or more of these layers, the layers are formed in the order of the alumina layer, the garnet layer, and the rare-earth (mono)silicate layer from a mullite layer side toward a gradient layer side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.