Fig. 1. Sample of chalcogenide glass

Fig. 2. Schematic diagram of nanoindentation.(a) Typical load-depth curves; (b) typical indentation experimental process diagram

Fig. 3. Displacement-load curves at three different maximum loads. (a) 10 mN; (b) 20 mN; (c) 30 mN

Fig. 4. Indentation topography (LSCM) under maximum load of 10 mN

Fig. 5. Curve of scratch depth-scratch length under variable load

Fig. 6. Light microscope diagram of surface morphology after variable-load scratch

Fig. 7. Curves of scratch depth-scratch length under three constant loads

Fig. 8. Surface topography observed by light microscope after scratching

Fig. 9. Curves of friction coefficient-scratch length under three constant loads