An experimental study of the corrosion Process of metals in virtue of crude oils and the characteristics

Document Type: Research Article


1 Dept. of Chemical and Process Engineering, University of Peradeniya.

2 Department of Chemical and Process Engineering, University of Moratuwa, Katubedda, Sri Lanka


Crude oils are dominant earth resources since composed with large number of hydrocarbons and some of trace compounds especially with corrosive compounds such as sulfur compounds, naphthenic acids and salts. In the current research the major scope was the investigations of the impact of such corrosive compounds on the corrosion of seven different types of ferrous metals in both qualitatively and quantitatively. According to the methodology such corrosive properties of two different types of selected crude oils were analyzed and the chemical compositions of seven different types of selected ferrous metals were detected by the standard methodologies and recommended instruments. The corrosion rates of such metals were determined by the relative weight loss method after certain immersion time periods in both crude oil samples while analyzing the corroded metal surfaces through a microscope. In addition that the decays of metallic elements from metals into crude oil samples were measured and the variations of the initial hardness of metals after the corrosion were measured by Vicker’s hardness tester. Basically there were observed the lower corrosion rates from stainless steels mainly with at least 12% of chromium and sufficient amount of nickel, higher progress of salts on the metallic corrosion at the normal temperatures while comparing with other corrosive compounds, formations of FeS, Fe2O3, corrosion cracks and cavities on the metal surfaces, decay of ferrous and copper from most metals while the immersion into crude oils and small and some insignificantly deductions of the initial hardness of metals.

Graphical Abstract

An experimental study of the corrosion Process of metals in virtue of crude oils and the characteristics


[1].   O.P. Khana, Materials Science and Metallurgy, New Delhi: Dhanpet Rai and Sons   publication, 2009.
[2].   T.A. Alsahhaf, A. Elkilani and M.A. Fahim, Fundamentals of Petroleum Refining, Amsterdam: Radarweg Press, 2010.
[3].   W. D. Calister, An Introduction of Materials Science and Engineering, NewYork: John Wiley and Sons, Inc, 2003.
[4].   M.E. Davis and R.J. Davis, Eds., Fundamentals of Chemical Reaction Engineering, New York: McGraw-Hill, 2003.
[5].   R. Singh, Introduction to Basic Manufacturing Process and Engineering Workshop, New Delhi: New Age International Publication, 2006.
[6].   W. Bolton, Eds., Engineering Materials Technology, London: B. H Newnes Limited, 1994.
[7].   H. A.  Ajimotokan, A. Y. Badmos and E. O. Emmanuel, “Corrosion in Petroleum Pipelines,” New York Science Journal, vol.2, no.5, pp. 36-40, 2009.
[8].   J.G. Speight, Eds., The Chemistry and Technology of Petroleum, New York: Marcel Dekker, 1999.
[9].   G. A. Afaf, “Corrosion Treatment of High TAN Crude,” PhD. Thesis, University of Khartoum, Khartoum, Sudan, 2007.
[10].            G. C. Okpokwasili and K. O. Oparaodu, “Comparison of Percentage Weight Loss and Corrosion Rate Trends in Different Metal Coupons from two Soil  Environments,”  International Journal of Environmental Bioremediation & Biodegradation, vol.2, no.5, pp. 243-249, 2014.
[11].            A.D. Usman and L.N. Okoro, “Mild Steel Corrosion in Different Oil Types,”    International Journal of Scientific Research and Innovative Technology, vol.2, no.2, Feb., pp. 9-13, 2015.
[12].            I.M. Ahmed, M.M. Elnour and M.T. Ibrahim, “Study the Effects of Naphthenic Acid in Crude Oil Equipment Corrosion,” Journal of Applied and Industrial Sciences, vol.2, no.6, Dec., pp. 255-260, 2014.
[13].            G.W. Luther and D. Rickard, “Chemistry of Iron Sulfides,” Chemical Reviews, vol.107, no.2, pp. 514-562, 2007.
[14].            H. Fang, S. Nesic and D. Young, “Corrosion of Mild Steel in the Presence of Elemental Sulfur,” presented at International Corrosion Conference and Expo, 2008.
[15].            G. M. Bota, S. Nesic, D. Qu and H.A. Wolf, “Naphthenic Acid Corrosion of Mild Steel in the Presence of Sulfide Scales Formed in Crude Oil Fractions at High Temperature,” presented at International Corrosion Conference and Expo, 2010.
[16].            M. Muller, “Theoretical Considerations on Corrosion Fatigue Crack Initiation,” Metallurgical Transactions, Vol. 13, pp. 649-655, 1982.
[17].            W.F. Smith, and J. Hashemi, Foundations of Material Science and Engineering, 4th Ed. New York: McGraw-Hill, 2006.
[18].            N. S. Hassan, “The Effect of Different Operating Parameters on the Corrosion Rate of Carbon Steel in Petroleum Fractions,” Engineering and Technology Journal, Vol. 31A, pp. 1182- 1193, 2013.
[19].            M. Schoell, Stable isotopes in petroleum research. In Advances in Petroleum Geochemistry, 1st Ed.          J. Brooks and D. Welte. pp. 215-245. London: Academic Press, 1984.
[20]. Royal Dutch Shell, The Petroleum Handbook.                    Amsterdam: Elsevier, 1983.
[21]. M. Engel, and S.  A. Macko, Organic Geochemistry:
       Principles and Applications, Plenum Press, New             York, pp. 861, 1993.