Composite coating on GH4169 alloy is prepared by laser cladding yttria-stabilized zirconia (YSZ)@Ni core–shell powders mixed with NiCoCrAlY alloy powders. The cyclic oxidation behavior of the coatings, especially the growth process of the oxide layer, is investigated based on experimental research and first-principle calculations. The results indicate that the oxidation resistance of coated GH4169 alloy is better than that of uncoated GH4169 alloy. The coating has three layers: a cellular dendrite outer layer, a planar YSZ interlayer, and an inner layer composed of Cr₂O₃ formed during laser cladding. After oxidation at 1000 and 1050 °C, as the oxidation time increases, the cellular dendrite outer layer becomes thicker, and the planar yttria-stabilized zirconia interlayer becomes thinner. Between the planar interlayer and Cr₂O₃ inner layer, an Al₂O₃ layer formed. Notably, cracks formed in the interface of Al₂O₃/Cr₂O₃ owing to their weak interface strength, which led to the failure of the composite coating.

GH4169合金上的复合涂层是通过激光熔覆氧化钇稳定的氧化锆（YSZ）@Ni核壳粉末与NiCoCrAlY合金粉末而制备的。基于实验研究和第一性原理计算，研究了涂层的循环氧化行为，尤其是氧化物层的生长过程。结果表明，涂​​层GH4169合金的抗氧化性能优于未涂层GH4169合金。该涂层具有三层：蜂窝状枝晶外层，平面YSZ中间层和由Cr ₂ O ₃组成的内层在激光熔覆过程中形成。在1000和1050°C氧化后，随着氧化时间的增加，蜂窝状枝晶的外层变厚，并且氧化钇稳定的平面氧化锆中间层变薄。在平面中间层和Cr ₂ O ₃内层之间，形成Al ₂ O ₃层。值得注意的是，由于其弱的界面强度，在Al ₂ O ₃ / Cr ₂ O ₃的界面中形成裂纹，这导致复合涂层的失效。