Fig. 1. Digital photo and XRD spectra of nickel slag

Fig. 2. Flow chart of modified slag preparation experiment

Fig. 3. Digital photo and XRD spectra of modified slag

Fig. 4. Magnetic hysteresis loop of nickel slag and modified slag

Fig. 5. Schematic diagram of MCF polishing devices

Fig. 6. Polishing devices of MCF polishing process

Fig. 7. Images of polished surface of workpiece

Fig. 8. Optical surface morphology and surface roughness of workpiece before and after polishing

Fig. 9. Material removal rate

Fig. 10. MCF morphologies of different modified slag content before and after polishing

Fig. 11. Appearance characteristic of MCF

Fig. 12. Effect of slag content on MCF morphology

Fig. 13. Shear force of MCF with different contents of modified slag

Fig. 14. SEM images of CIP and modified slag

Fig. 15. SEM images and EDS of magnetic clusters

Fig. 16. Polishing mechanism of clustered structures of modified slags