Fig. 1. Schematic diagrams of the laser cladding principle and samples after cladding. (a) Laser cladding schematic diagram; (b) Fe-a sample; (c) Fe-b sample

Fig. 2. XRD diffraction pattern of the cladding layer

Fig. 3. Microstructure of the sample cross-section. (a) Microstructure at the Fe-a fusion line; (b) microstructure at the Fe-b fusion line; (b) microstructure of the Fe-b cladding layer

Fig. 4. EDS line scanning of Fe-a from the cladding layer to the substrate

Fig. 5. Microhardness curve of cross-section of the cladding layer

Fig. 6. Potentiodynamic polarization curve and AC impedance Nyquist spectrum of the Fe-a and Fe-b cladding layer and substrate. (a) potentiodynamic polarization curve; (b) AC impedance Nyquist Spectrum

Fig. 7. Bode diagram of the Fe-a and Fe-b cladding layer and substrate