A thermal barrier coating for a superalloy article

专利名称：A thermal barrier coating for a superalloy

article and a method of application thereof

发明人：Rickerby, David Stafford,Wing, Rodney,

George

申请号：EP97303840.9申请日：19970604公开号：EP0814178A1公开日：19971229

专利附图：

摘要：A multi-layer thermal barrier coating (42) for a superalloy article (40) comprisesa platinum enriched superalloy layer (44), an MCrAlY bond coating (46) on the platinum

enriched superalloy layer (44), a platinum enriched MCrAlY layer (48) on the MCrAlYbond coating (46), a platinum aluminide coating (50) on the platinum enriched MCrAlYlayer (48), an oxide layer () on the platinum aluminide coating (50) and a ceramicthermal barrier coating (56) on the oxide layer (). The platinum aluminide coating (50)and the platinum enriched MCrAlY layer (48) reduce movement of transition metals fromthe superalloy substrate (40) and the MCrAlY bond coating (46) to the oxide layer () sothat the oxide layer is very pure alumina. The platinum enriched superalloy layer (44)reduces movement of aluminium from the MCrAlY bond coating (46) to the superalloysubstrate (40) so that the oxide layer () remains pure alumina to improve long termadhesion of the ceramic thermal barrier coating (56), and additionally reduces movementof transition metals from the superalloy substrate (40) to the oxide layer ().

申请人：ROLLS-ROYCE plc,CHROMALLOY UNITED KINGDOM LIMITED

地址：65 Buckingham Gate London, SW1E 6AT GB,1 Linkmel Road Eastwood,Nottingham NG16 3RZ GB

国籍：GB,GB

代理机构：Gunn, Michael Alan

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