Influence of Nano Additives on Protective Coatings for Oil Pipe Lines of Oman

Abstract

—The paper presents, analyzes and comments on the findings for different type of nano-additives used in painted coatings against the corrosion behavior for steel pipe lines, used in petroleum industry of Oman. The examination for the rate of corrosion in low alloy steel pipelines included a range of coated samples that includes organic paint, metallic paint, Aluminum, Zinc and electroless ones. After the samples were coated, the surface roughness was checked and the coating thickness maintained. For corrosion rate analysis and the evaluation of each coating's life period, a number of test including atmospheric exposure test, dry and wet test and potentiodynamic test were conducted. In order to analyze the surface behavior of coatings, characterization was performed with SEM-scanning electron microscope that later supported with hardness test results. The performance analysis of several coatings investigates that, mixture of nano Al 2 O 3 additive with Aluminum paint gives the best result against corrosion and presented good surface performance in comparison with other samples.