Fig. 1. NiCoCrAlY alloy powder morphology

Fig. 2. Schematic of laser cladding test

Fig. 3. Macroscopic morphology and cross section morphology of single NiCoCrAlY coating. (a1) (b1) 4 mm/s; (a2) (b2) 8 mm/s; (a3) (b3) 12 mm/s; (a4) (b4) 16 mm/s

Fig. 4. Influence of scanning speed on the forming of single NiCoCrAlY coating. (a) Height and width of coating; (b) dilution rate of coating

Fig. 5. Microstructure of single NiCoCrAlY coating. (a1)-(d1) Areas near top zones; (a2)-(d2) center zones; (a3)-(d3) bonding zones

Fig. 6. NiCoCrAlY coating hardness

Fig. 7. Friction coefficient variation curves. (a) 4 mm/s; (b) 8 mm/s; (c) 12 mm/s; (d) 16 mm/s

Fig. 8. Wear rate

Fig. 9. SEM micrographs of wear tracks of NiCoCrAlY coating. (a) 4 mm/s; (b) 8 mm/s; (c) 12 mm/s; (d) 16 mm/s

Fig. 10. Wear tracks of NiCoCrAlY coating。(a) 3D profile; (b) depth curves of wear cross section