Properties of WC-25Co/NiCrAlY coating and its application in titanium alloy blade shoulder

doi:10.13251/j.issn.0254-6051.2023.11.047

Abstract

Abstract: NiCrAlY bottom layer and WC-25Co surface layer were prepared by spraying on TC6 titanium alloy specimens. The microstructure, microhardness, flexural behavior, bonding strength, thermal shock and wear behavior of the coating were studied. Based on the test results, a TC6 rotor blade of an aeroengine was taken as an example to verify the applicability of spraying coating on the blade shoulder, in particular, a long-term test evaluation of the coating was carried out. The results show that the coating has good comprehensive performance and can effectively improve the wear resistance and vibration of the shoulder of the TC6 rotor blades, meeting the requirements of aeroengines.

Key words: TC6 titanium alloy, WC-25Co/NiCrAlY coating, spraying, blade shoulder, aeroengine

CLC Number:

TG174.442

Zhang Mourui, Liu Lixiang, Yu Ting, Li Changyin, Cui Yongjing. Properties of WC-25Co/NiCrAlY coating and its application in titanium alloy blade shoulder[J]. Heat Treatment of Metals, 2023, 48(11): 288-292.

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