fig15

Figure 15. AFM images for Ti matrix of PEO and PEO-MH after removing the coating and statistical analysis: (A-C) AFM images and statistical analysis for Ti matrix of PEO after removing the coating; (D-F) AFM images and statistical analysis for Ti matrix of PEO-MH after removing the coating. PEO: Plasma electrolytic oxidation; MH: microwave hydrothermal; AFM: atomic force microscopy.