Al85Ni8Y4Ce3 amorphous coatings were prepared on Q235 steel by laser thermal spraying and laser remelting. The structure and thermodynamic behaviour of the coating were analysed by scanning electron microscope, energy-dispersive spectrometer, X-ray diffractometer and differential scanning calorimeter. The microhardness distribution and wear properties of the coating were investigated by microhardness tester and wear tester. The results revealed that a small number of pores and AlFeNi crystal phases presented on the surface of spraying coating, and the remelting layer presented a dense structure with a smooth surface. The volume fraction of the amorphous phase in the remelting layer was 89.9% that indicated a better glass-forming ability. The surface microhardness of the spraying coating was 754.2 HV0.2, and the hardness of the remelted layer was 847.6 HV0.2. After laser remelting treatment, the friction coefficient of the coating decreases by 20% and the wear resistance increases by 31%.
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