Microstructure and mechanism of Al2O3-ZrO2 eutectic coating prepared by combustion-assisted thermal explosion spraying

► Al2O3-ZrO2 eutectic coating was produced by combustion-assisted thermal explosion spraying, which is a process-simplifying and energy-saving method. ► The cross-sectional microstructure of the coating shows successively amorphous, cellular and dendrite structure along the thickness direction. ► The formation mechanism and microstructure of the coating was analyzed and studied.