镍基高温合金铝硅涂层高速旋转燃气热冲击实验研究  

Experimental Study on the Thermal Shock of Nickel-Based Superalloy with Al-Si Coating Using High-Speed Rotating Gas

作　　者：李博海 王霭龄 火克莉 蒙彩思 张晓珊 付细玲 陈岚 赵思豪 夏杰 LI Bohai;WANG Aiing;HUO Kei;MENG Caisi;ZHANG Xiaoshan;FU Xiing;CHEN Lan;ZHAO Sihao;XIA Jie(Unit 93147 of PLA,Guiyang 550025,China;AECC Guiyang Precision Casting Company,Guiyang 550014,China;Wuhan Tiedun Civil Defense Engineering Co.,Ltd.,Wuhan 430200,China;Hunan Jiangye Coating Technology Co.,Ltd.,Xiangtan 411399,China;Hunan Institute of Technology,Hengyang 421002,China)

机构地区：[1]中国人民解放军93147部队,贵州贵阳550025 [2]贵阳航发精密铸造有限公司,贵州贵阳550014 [3]武汉铁盾民防工程有限公司,湖北武汉430200 [4]湖南江冶涂层技术有限公司,湖南湘潭411399 [5]湖南工学院,湖南衡阳421002

出　　处：《材料研究与应用》2023年第3期512-520,共9页Materials Research and Application

基　　金：湖南省自然科学基金面上项目(2021JJ30467)。

摘　　要：为了提高叶片在恶劣服役环境下的使用性能,用料浆法在DZ417G高温合金表面制备了铝硅涂层,利用涡轮叶片模拟服役环境装置,分别开展了900和1100℃下的高速旋转燃气热冲击实验,并且用扫描电镜对试样表面和截面进行了形貌观察及成分分析,以及采用XRD分析了涂层的相结构。结果表明:经高速旋转热冲击后,涂层结构保持完整,其对基底有良好的保护作用;热冲击后在涂层外表面形成不连续氧化膜,与静态氧化时呈现的氧化机理不同。To improve the service performance of blades in harsh service environments,Al-Si coatings were prepared on the surface of DZ417G superalloy by the slurry process.The high-speed rotating gas thermal shock experiments were carried out at 900℃and 1100℃by using the equipment simulating the service environment of turbine blades.The surface and cross-sectional microstructures of the coating were observed and analyzed by scanning electron microscopy.The phase structure of the coating was analyzed by XRD.The results indicate that the Al-Si coating structure remained intact after thermal shock and provided good protection to the superalloy substrate.The oxidation mechanism of the discontinuous oxide film formed on the outer surface of the coating after thermal shock is different from static oxidation.

关 键 词：铝硅涂层 料浆法 燃气热冲击 高温氧化 

分 类 号：TG174.44[金属学及工艺—金属表面处理]