Al2O3 涂层对硅基陶瓷型芯与镍基单晶高温合金界面反应的影响

何家宝, 王亮, 张朝威, 邹明科, 孟杰, 王新广, 姜肃猛, 周亦胄, 孙晓峰

Effect of Al2O3 Coating on Interface Reaction Between Si-Based Ceramic Core and Ni-Based Single-Crystal Superalloy

HE Jiabao, WANG Liang, ZHANG Chaowei, ZOU Mingke, MENG Jie, WANG Xinguang, JIANG Sumeng, ZHOU Yizhou, SUN Xiaofeng

图8 施加Al2O3涂层的硅基陶瓷型芯与镍基单晶高温合金反应后型芯表面的微观形貌及EDS元素面分布

Fig.8 Surface morphologies (a, b) and EDS analyses (c-g) of the Al2O3-coated Si-based ceramic core after reaction with Ni-based single-crystal superalloy (a) overall morphology (I and II—non-contact area and contact area between the Al2O3-coated Si-based ceramic core and the Ni-based single-crystal superalloy melt, respectively) (b) microstructure of the black rectangular area in Fig.8a (c-g) EDS mappings corresponding to Fig.8b