某新型航空发动机压气机叶片服役环境适应性研究初探  

Study on Environmental Adaptability of the Blade of a New Aero-engine Gas Compressor

作　　者：刘治国 查小晖 李宇涛 李心舒 LIU Zhi-guo;ZHA Xiao-hui;LI Yu-tao;LI Xin-shu(Naval Aeronautical University Qingdao Branch,Qingdao 266041,China;AECC Hunan Aviation Powerplant Research Institute,Zhuzhou 412002,China;Unit 92925,Changzhi 046000,China;Unit 91001,Beijing 100000,China)

机构地区：[1]海军航空大学青岛校区,山东青岛266041 [2]中国航发湖南动力机械研究所,湖南株洲412002 [3]92925部队,山西长治046000 [4]91001部队,北京100000

出　　处：《装备环境工程》2021年第6期1-8,共8页Equipment Environmental Engineering

摘　　要：目的开展某新型航空发动机压气机叶片服役环境适应性研究,探究压气机叶片服役环境下的耐蚀性及腐蚀萌生周期。方法采用电化学工作站,开展压气机材料典型环境下标准三电极电化学试验,获取腐蚀电流。结合机场环境谱与当量折算法,利用计算得到的当量折算系数,对机场环境谱进行当量折算,编制模拟该型发动机后续服役环境的仿真加速腐蚀试验环境谱。依据该环境谱,开展压气机叶片试件仿真加速腐蚀试验。结果在模拟服役环境下的第8个当量腐蚀年限时,新型航空发动机压气机叶片开始出现局部点蚀。随着腐蚀年限的延长,腐蚀损伤程度逐渐加重。结论在服役环境下,新型航空发动机压气机叶片具有良好的环境适应性,能够满足6~8 a首翻期内的环境适应性要求。A simulation accelerated corrosion experiment of a new type aero-engine compressor blade simulating service environment was carried out,and the corrosion resistance and corrosion damage evolution law of the compressor blade under service environment were examined.Electrochemical experiment were carried out with electrochemical workstation in typical environment of compressor material and corrosion current in typical environment was acquire.Combined with the existing air-port environment spectrum and equivalent conversion algorithm,the airport environment spectrum was equivalently conversed using conversion coefficient obtained from corrosion current,the accelerated corrosion test spectrum for simulated follow-up service environment was compiled,and the accelerated corrosion test of compressor blade was carried out based on the obtained accelerated corrosion test spectrum.Local pitting corrosion of new type aeroengine compressor blade appeared at the 8 equiva-lent corrosion year,and with the prolongation of corrosion time,the corrosion damage degree is gradually aggravated.The new aeroengin compressor blades have good environmental adaptability in service environment and can meet the requirements of the fist turn.

关 键 词：航空发动机 压气机叶片 电化学试验 当量关系 加速腐蚀试验 环境适应性 

分 类 号：TG174[金属学及工艺—金属表面处理]