WC-25Co/NiCrAlY涂层性能及其在钛合金叶片凸肩的应用  

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

作　　者：张眸睿 刘礼祥 于婷 李长银 崔永静 Zhang Mourui;Liu Lixiang;Yu Ting;Li Changyin;Cui Yongjing(AECC Shenyang Liming Aero-Engine Co.,Ltd.,Shenyang Liaoning 110043,China;Research Institute of Aero-Engine,Beijing University of Aeronautics and Astronautics,Beijing 100191,China;AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China)

机构地区：[1]中国航发沈阳黎明航空发动机有限责任公司,辽宁沈阳110043 [2]北京航空航天大学航空发动机研究院,北京100191 [3]中国航发北京航空材料研究院,北京100095

出　　处：《金属热处理》2023年第11期288-292,共5页Heat Treatment of Metals

摘　　要：在TC6钛合金试样上喷涂制备了NiCrAlY底层和WC-25Co面层,研究了涂层的显微组织、显微硬度、弯曲行为、结合强度、热震性能以及摩擦磨损行为。基于试验结果以某型号航空发动机的某级TC6转子叶片为例,对叶片凸肩部位进行了喷涂验证,并进行了长试考核。结果表明,该涂层综合性能良好,用于钛合金转子叶片凸肩部位,可有效发挥耐磨、减振作用,满足航空发动机使用要求。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.

关 键 词：TC6钛合金 WC-25Co/NiCrAlY涂层 喷涂 叶片凸肩 航空发动机 

分 类 号：TG174.442[金属学及工艺—金属表面处理]