镍基单晶高温合金表面Co-Al涂层抗高温腐蚀性能研究  

Research on High Temperature Corrosion Behaviors of Co-Al Coatings on Ni-based Superalloy

作　　者：李艳明 刘欢 佟文伟 胡鹏 刘士佳 李夺 隋福利 Li Yanming;Liu Huan;Tong Wenwei;Hu Peng;Liu Shijia;Li Duo;Sui Fuli(Shenyang Aeroengine Research Institute,AECC,Shenyang Liaoning 110015,China)

机构地区：[1]中国航发沈阳发动机研究所,辽宁沈阳110015

出　　处：《山西冶金》2025年第1期29-30,33,共3页Shanxi Metallurgy

摘　　要：镍基单晶高温合金表面制备Co-Al涂层,研究合金基体与涂层的热腐蚀性能。热腐蚀实验100 h后,合金基体表面生成了NiO、Cr_(2)O_(3)和Al_(2)O_(3)的混合型氧化物,发生了明显的内氧化硫化现象,降低了基体的抗热腐蚀性能。Co-Al涂层表面形成了以Al_(2)O_(3)为主的连续且致密的氧化物,能够有效阻止腐蚀进一步深入,具备较好的抗热腐蚀性能。Co-Al coating were prepared on the surface of nickel-based single crystal superalloy,the hot corrosion behaviors were investigated.After corrosion for 100 h,alloy substrate had poorer hot corrosion resistance that a mixed oxidation layer of NiO,Cr_(2)O_(3) and Al_(2)O_(3) in the corrosion area,which could not prevent hot corrosion.On the contrary,Co-Al coating had excellent hot corrosion resistance that the further hot corrosion enable to be inhibited because of a continuous and dense Al_(2)O_(3) protective layer on the surface.

关 键 词：单晶高温合金 Co-Al涂层 腐蚀 

分 类 号：V252.2[一般工业技术—材料科学与工程]