The Morphology of anti-corrosive coatings on metal surfaces using exracts of Calotropis procera and Euphobia kamerunica pax

Abstract

This study was carried out in order to assess the morphology of coatings on mild steel metal surfaces using Euphorbia kamarunica Pax and Calotropis procera plant extracts as corrosion-inhibitors. The determination of the morphology of the coated film on the metal surfaces was carried using the scanning electron microscope. The images obtained showed extracts of E. kamarunica are in the form of strands on the metal surface with mean particle size of 25 nm while those of C. procera were oval in shape with mean particle size of 180 nm. Generally, the particle sizes seen from both extracts ranged from 12500 to 25nm. Shapes of morphology plant coatings on metal, mean provides the distribution of particle sizes- allowing particle dimension for characterizing materials studying aggregates and assessing particle distribution, angles sizes of the orientation of features in a SEM image enables the analysis of crystallographic orientation surface roughness and the alignment of particles and length which helps to understand the scale and dimensions of the objects observed under microscope of the coated plant extracts have all been provided from the Scanning Electron Microscope analysis of the natural plants. These results are indicative of the degree of effectiveness of using these plant extracts as corrosion inhibitors.