Pt改性镍基高温合金铝化物涂层研究进展

邱盼盼, 舒小勇, 胡林丽, 杨韬, 房雨晴

Research Progress of Pt-modified Aluminide Coating on Nickel-base Superalloys

QIU Panpan, SHU Xiaoyong, HU Linli, YANG Tao, FANG Yuqing

图2 向内生长型的Pt改性铝化物涂层中的微观结构[35,36]

Fig.2 Schematics of various microstructures observed in an inward grown Pt modified aluminide coating: (a) one limiting microstructure with the outer layer constituting of single-phase ξ-PtAl2, (b) the other limiting microstructure with the outer layer showing a single-phase β-NiAl structure in which the entire amount of Pt remains in solid solution and (c) the coating structure between these extremes where the outer layer exhibits a two-phase microstructure consisting of ξ and β phases[35,36]