Sketch a cross-section of the anodic film that is formed. Label the features of the film. Give th...
Sketch a cross-section of the anodic film that is formed. Label the features of the film. Give the size of the features and the thickness of the film. Density of alumina: 2.5 g cm-3. Molar mass of aluminium: 27 g. Molar mass of oxygen: 16 g. Faradays constant: 96500 C. Electric field for ionic migration: 8 x 106 V cm-1. (a) Figure 2 shows the dependence of the voltage on time during anodizing of aluminium at 5 mA cm2in 0.4...