Fig. 4 | Scientific Reports

Fig. 4

From: Effect of ultrasound on the physicochemical, mechanical and adhesive properties of micro-arc oxidized coatings on Ti13Nb13Zr bio-alloy

Fig. 4

(a) The average values of the heigh parameters: kurtosis (Sku), and skewness (Ssk) for uncoated and coated specimens. (b) The average values of the functional parameters: core height (Sk), reduced peak height (Spk), and reduced valley depth (Svk) for uncoated and coated specimens. (c) The calculated surface texture direction values showed mixed structure for all modified specimens. (d) Surface topographies and the histogram of peak and valley distribution of uncoated Ti13Zr13Nb, 68_450_n_300 – specimen after treatment with the lowest isotropy value, 136_600_sin_300 – specimen after treatment with the highest isotropy value. For all analyses n = 3; data are expressed as means ± SD; * statistically significant difference as compared to the Ti13Zr13Nb (p < 0.05). # – statistically significant difference as compared to the MAO specimen in each group (p < 0.05).

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