fig13
![Development of robust surfaces for harsh service environments from the perspective of phase formation and transformation](https://image.oaes.cc/6fdf97ea-ef8f-4210-ac0b-4962c57383cc/4323.fig.13.jpg)
Figure 13. (A) First-principles calculated energy difference (ΔE) and work of separation (Wsep) as a function of modulation ratio (tTiAlN:tMeN) for TiAlN(001)/TiN(001) and TiAlN(001)/ZrN(001). (B) Cross-sectional TEM micrographs showing the interfacial structures in TiAlN/MeN multilayered coatings with different modulation ratios. Figure reproduced from Ref.[77] with permission from Elsevier.