Figure 2 | Scientific Reports

Figure 2

From: A new corrosion-inhibiting strategy for biodegradable magnesium: reduced nicotinamide adenine dinucleotide (NADH)

Figure 2

Microscopic analyses for corrosion product layer formed on NADH-treated Mg. (a,b) Cross-sectional SEM images of pure Mg after immersion in HBSSs without (a) and with (b) 2.5 mM NADH for 48 h. EDS mapping images for the cross-sectional SEM image of Mg immersed in 2.5 mM NADH-containing HBSS for 48 h are shown in (b) with six types of elements (yellow: magnesium, blue: oxygen, cyan: calcium, pink: phosphorous, red: carbon, and green: nitrogen). (c) XRD patterns of Mg after 48 h of immersion in HBSSs with different concentrations of NADH (black: 0 mM, red: 2.5 mM, and blue: 5.0 mM). Crystalline Mg peaks are indicated by filled triangles. (d,e) TEM images, SAED patterns, and TEM-EDS spectra of amorphous Ca-P compounds (d) and Mg oxides (e) formed on the Mg surface after immersion tests.

Back to article page