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Low density oxidation resistant superalloy materials capable of thermal barrier coating retention without a bond coat
Low density oxidation resistant superalloy materials capable of thermal barrier coating retention without a bond coat
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机译:低密度抗氧化超级合金材料,能够在没有粘结涂层的情况下保持隔热涂层
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摘要
A low density superalloy and no bond coat thermal barrier coating system is described. The combination of alloy and TBC system can be used to fabricate light weight turbine blades with reduced blade pull. The present invention concerns nickel base superalloy articles which include additions of yttrium and hafnium that causes them to develop a durable, adherent aluminium oxide coating which will adhere to both the substrate and a ceramic thermal barrier coating thereby eliminating the need for an intermediate bond coat.
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