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The effects of several coatings on cyclic oxidation resistance of TiAl intermetallics

机译:几种涂层对TiAl金属间化合物抗循环氧化性能的影响

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摘要

The behaviours of Al{sub}2O{sub}3, aluminide, CoCrAlY and TiAlCr coatings on the cyclic oxidation resistance of a TiAl alloy were investigated . Al{sub}2O{sub}3 coating exhibited limited improvement of the cyclic oxidation of TiAI due tospallation. Aluminide and CoCrAlY coatings remarkably improved the cyclic oxidation kinetics of TiAl due to the formation of adherent A1{sub}2O{sub}3 scales, but the two coatings exhibited a poor coating-substrate compatibility, especially cracks occurred in two coatings after cyclic oxidation coatings exhibited a poor substrate-coating compatibility in comparison with TiAlCr coating.
机译:研究了Al {sub} 2O {sub} 3,铝化物,CoCrAlY和TiAlCr涂层对TiAl合金抗循环氧化性能的影响。 Al {sub} 2O {sub} 3涂层由于脱落而显示出有限的TiAl循环氧化改进。铝化物和CoCrAlY涂层由于形成了粘附的A1 {sub} 2O {sub} 3氧化皮而显着改善了TiAl的循环氧化动力学,但是这两个涂层表现出较差的涂层-基底相容性,特别是在循环氧化后在两个涂层中出现了裂纹与TiAlCr涂层相比,该涂层表现出差的基底涂层相容性。

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