Fig. 1. Powder morphology. (a) IN625; (b) WC-12Co

Fig. 2. Laser cladding experimental site

Fig. 3. XRD spectra of composite coatings

Fig. 4. Cross-sectional morphology of four coatings. (a) IN625; (b) IN625 with WC-12Co added at m(WC-12Co)=5%; (c) IN625 with WC-12Co added at m(WC-12Co)=10%; (d) IN625 with WC-12Co added at m(WC-12Co)=15%

Fig. 5. Microstructures of composite coatings with different contents of WC-12Co. (a)(d) m(WC-12Co)=5%; (b)(e) m(WC-12Co)=10%;(c)(f) m(WC-12Co)=15%

Fig. 6. EDS surface scanning results of WC-12Co particles in composite coatings with WC-12Co added at m(WC-12Co)=5%

Fig. 7. Microhardness of composite coatings. (a) Microhardness curve; (b) average microhardness

Fig. 8. Friction coefficient curves of different composite coatings

Fig. 9. SEM of wear surfaces of composite coatings at different times. (a)(e)(i) IN625; (b)(f)(j) IN625 with WC-12Co added at m(WC-12Co)=5%; (c)(g)(k) IN625 with WC-12Co added at m(WC-12Co)=10%; (d)(h)(l) IN625 with WC-12Co added at m(WC-12Co)=15%

Fig. 10. Mass loss and wear rate of four samples

Fig. 11. Three-dimensional profiles of wear surfaces for four samples. (a) IN625; (b) IN625 with WC-12Co added at m(WC-12Co)=5%; (c) IN625 with WC-12Co added at m(WC-12Co)=10%; (d) IN625 with WC-12Co added at m(WC-12Co)=15%