Scanning Electron Microscopy (SEM)—image of aluminum.
Sudesh Kumar, Suraj Prakash Mathur
CC BY 4.0
Sudesh Kumar et. al. "Corrosion Inhibition and Adsorption Properties of Ethanolic Extract of Calotropis for Corrosion of Aluminium in Acidic Media", ISRN Corrosion <a rel="nofollow" class="external text" href="https://doi.org/10.1155/2013/476170">doi:10.1155/2013/476170</a>