The formation model of Ni-Cr oxides on NiCoCrAlY-sprayed coating

► We studied the oxidation behaviour of the NiCoCrAlY-sprayed coating at 1000 °C. ► The study was carried out from both the experimental and crystal point of view. ► The atomic arrangement and distribution of oxides were analyzed. ► The formation model of oxides is based on the matching relationship between atoms.