Fig. 1. Schematic of forming principle and comparison of surface morphology. (a) Schematic of forming principle; (b)--(d) confocal surface morphologies corresponding to B=0, 200, 400 mT, respectively; (e)--(g) macroscopic surface morphologies corresponding to B=0, 200, 400 mT, respectively

Fig. 2. Comparison of microstructure under three magnetic fields. (a)--(c) Top, middle, and bottom of cladding layer when B=0 mT; (d)--(f) top, middle, and bottom of cladding layer when B=200 mT; (g)--(i) top, middle, and bottom of cladding layer when B=400 mT

Fig. 3. XRD and microhardness. (a) XRD pattern of cladding layer; (b) microhardness distribution curve

Fig. 4. Friction and wear experiment. (a) Friction coefficient; (b) mass loss; (c)--(e) wear morphology under B=0, 200, 400 mT, respectively

Fig. 5. Potentiodynamic polarization curve