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Environment barrier coating for a component and method for fabricating the same 发明授权

2023-10-20 2960 256K 0

专利信息

申请日期 2025-07-10 申请号 EP06125840
公开(公告)号 EP1795515B1 公开(公告)日 2012-10-24
公开国别 EP 申请人省市代码 全国
申请人 GENERAL ELECTRIC COMPANY
简介 An environmental barrier coating (10) for a component including silicon that has a first coefficient of thermal expansion is provided. The environmental coating includes a silicon bondcoat (30) that is bonded to at least a portion of an outer surface of the component. An intermediate layer (25, 27, 29) is bonded to the silicon bondcoat and has a second coefficient of thermal expansion matched to the first coefficient of thermal expansion. The intermediate layer has a general composition of RE 2 Si 2 O 7 . A protective layer (36) is bonded to the intermediate layer and has a general composition of RE 2 SiO 5 . A surface layer (38) is bonded to the protective layer. The surface layer includes RE and has a ratio of RE to oxygen of at least 2 : 3.


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