Fig. 1. Diagram of band structure. (a) WTi; (b) Cr₂O₃; (c) TiN

Fig. 2. Diagram of density of states. (a) WTi; (b) Cr₂O₃; (c) TiN

Fig. 3. Diagram of differential charge density. (a) Cr₂O₃; (b) TiN

Fig. 4. Absorption coefficient curves. (a) Cr₂O₃; (b) TiN

Fig. 5. Electric field distributions of nanoparticles with different radii. (a) TiN;(b) Cr₂O₃

Fig. 6. Extinction spectra of oxides and nitrides with different grain sizes. (a) TiN;(b) Cr₂O₃

Fig. 7. Structural diagram. (a) Stratification with different particle sizes; (b) stratification with same particle size; (c) random distribution with different particle sizes

Fig. 8. Electric field cloud distributions and extinction spectra of nanoparticles. (a) Electric field cloud distribution of stratification structure with different particle sizes; (b) electric field cloud distribution of stratification structure with same particle size; (c) electric field cloud distribution of random distribution structure with different particle sizes; (d) extinction spectra of TiN; (e) extinction spectra of Cr₂O₃

Fig. 9. Spectral curve of AlCrON cermet-based coating aged at 500 ℃ for different times

Fig. 10. Distribution and EDS line scan of elemental components in coating section. (a) Before aging treatment; (b) after aging treatment

Fig. 11. EDS surface scan of each element in coating section after aging treatment. (a) Al; (b) Cr; (c) O; (d) N

Fig. 12. TEM diagram of AlCrON cermet-based coating. (a) Dark field image; (b) high resolution transmission electron microscopy image