Effect of Heat Treatment on Microstructure and Tribocorrosion Performance of Laser Cladding Ni-65 WC Coating

Figure 3

Cross-section microstructure and scanning of Ni/W interface of Ni-65wt%WC coating after heat treatment at different temperatures: (a) cladding coating, (b) 500°C, (c) 700°C, (d) 900°C, and (e) variation of grain size and the diffusion layer.

(a)

(b)

(c)

(d)

(e)