Microstructure and composition evolution of a single-crystal superalloy caused by elements interdiffusion with an overlay NiCrAlY coating on oxidation

Lanlan Yang, Minghui Chen, Jinlong Wang, Yanxin Qiao, Pingyi Guo, Shenglong Zhu, Fuhui Wang

Table 1 Nominal compositions of the single-crystal superalloy N5 and the NiCrAlY coating (wt%).

Sample Ni Cr Al Co Ta Mo W Re Y N5 Bal. 7.0 6.2 7.5 6.5 1.5 5 3.0 NiCrAlY Bal. 27 11 0.5