Fig. 1. Laser-assisted jet electrochemical polishing experiment. (a) Diagram of device; (b) schematic

Fig. 2. Morphologies and roughness after laser-assisted jet electrochemical spot polishing under different laser powers . (a) Three-dimensional morphologies; (b) line profile; (c) roughness

Fig. 3. Line scan strategy and line scan diagram. (a) Line scan strategy; (b) line scan diagram

Fig. 4. Morphologies and roughness after line scan polishing under different scanning times; (a) 3D morphologies; (b) roughness

Fig. 5. Face scanning strategy and polishing effects. (a) Face scanning strategy; (b) polishing effect under 30 mm/s scanning speed;

Fig. 6. Three-dimensional morphologies before and after face scan polishing. (a) Before polishing; (b) after polishing

Fig. 7. SEM images and EDS scanning results of surfaces before and after polishing. (a)‒(c) Original surfaces; (d)‒(f) after jet electrochemical polishing; (g)‒(i) after laser-assisted jet electrochemical polishing

Fig. 8. Surface grain distributions in processed area under different polishing methods. (a) Jet electrochemical polishing ; (b) laser-assisted jet electrochemical polishing

Fig. 9. XPS full spectra. (a) Substrate; (b) jet electrochemical polishing; (c) laser-assisted jet electrochemical polishing

Fig. 10. High-resolution Ni2p, Cr2p, and W4f XPS spectra. (a1)‒(a3) Substrate; (b1)‒(b3) jet electrochemical polishing;(c1)‒(c3) laser-assisted jet electrochemical polishing

Fig. 11. XRD patterns of GH3044 alloy specimens before and after polishing

Fig. 12. Mechanism diagrams of laser-assisted jet electrochemical polishing of GH3044 alloy