热喷涂复合结构MCrAlY/8YSZ热障涂层的抗剥落能力

刘福广, 陈胜军, 潘红根, 董鹏, 马英民, 黄杰, 杨二娟, 米紫昊, 王艳松, 雒晓涛

Thermally Sprayed Thermal Barrier Coating of MCrAlY/8YSZ with Hybrid Microstructure and Its Spallation Resistance

LIU Fuguang, CHEN Shengjun, PAN Honggen, DONG Peng, MA Yingmin, HUANG Jie, YANG Erjuan, MI Zihao, WANG Yansong, LUO Xiaotao

表2 复合结构粘接层与陶瓷隔热层的等离子喷涂参数

Table 2 Plasma spraying parameters for the hybrid structured bond-coat and 8YSZ coating

Parameters NiCoCrAlTaY/8YSZ bond coat 8YSZ coating Power/kW 30 39 Pressure of primary gas/Ar/MPa 0.8 0.8 Flow of primary gas/h-1 55 55 Pressure of secondary gas/H2/MPa 0.4 0.4 Flow of secondary gas/SLM 7.0 7.0 Pressure of feeding gas/N2/MPa 0.2 0.2 Flow of feeding gas/SLM 7 4 Rotation speed of powder feeder/r·min-1 6 3 Standoff distance/mm 100 85