Comparative Study of Corrosion Sensitivity of Selected Ferrous Metals in Crude Oil
- 1 Engineering Materials Development Institute, Akure, Nigeria.
- 2 Engineering Materials Development Institute, Akure, Nigeria.
- 3 Engineering Materials Development Institute, Akure, Nigeria.
- 4 Prototype Engineering Development Institute, Ilesa, Nigeria.
- 5 Department of Metallurgical and Materials Engineering, Federal University of Technology,Akure, Nigeria.
- 6 National Agency for Science and Engineering Infrastructure, Abuja, Nigeria.
- 7 National Agency for Science and Engineering Infrastructure, Abuja, Nigeria.
Abstract
Corrosion characteristic of selected ferrous metal samples (plain and alloyed ductile iron, low carbon steel and austenitic stainless steel) in crude oil was investigated using weight loss method. The microstructures of the coupons were taken before and after corrosion test. It was observed that all the materials experience gain in weight within the first 10 days in the medium. This weight gain is attributed to the formation of hard and passive phases which acted as strong protective barriers to corrosion. It was also observed that the rate of corrosion decreased with increase in the number of days of exposure for all the coupons, this may be probably due to the deposition of corrosion products that tend to shield the corroding surface from further corrosion attack, there by depressing the rate of corrosion. This result shows that despite initial low corrosion resistance of plain ductile iron, it can still be considered, alongside other materials, for application in pipelines and storage facilities for crude oil.
- Raymond A. Higgins. 2004. Engineering Metallurgy Applied Physical Metallurgy; Vinod Vasishtha for Viva Books Private Limited; New Delhi.
- Aigbodion, V.S., Mohammed, O.Y., Yakubu, S.I. and Agunsoye, J.O. 2007. “Corrosion Characteristics of Vanadium Alloyed Ductile Cast Iron in Nitric Acid”. J. Applied Sciences Research, Vol. 4, No 10, pp. 1267-1271.
- William D. Calister Jr. 2003. Materials Science and Engineering: An Introduction. John Wiley & Sons, Inc. New York.
- Khana O.P. 2009. Materials Science and Metallurgy; Dhanpet Rai and Sons Publication, New Delhi.
- Afolabi A.S. 2007. “Corrosion and Stress Corrosion Behaviors of Low and Medium Carbon Steels in Agro-Fluid Media”, Leonardo Electronic J. Practices and Technologies, Vol. 10, pp. 55-66.
- Badmos, A.Y, Ajimotakan, H.A and Emmanuel, E.O. 2009. “Corrosion in Petroleum Pipelines”. New York Science J. Vol. 2, No 5, pp. 36 - 40.
- Lawal, A.I. 2005. “Corrosion of Carbon Steel in Natural and Packed Orange Juice”. B. Eng. Thesis, Department of Mechanical Engineering, University of Ilorin, Nigeria
- Osarolube, E., Owate, I.O. and Oforka, N.C. 2004. “The Influence of Acidity Concentrations on Corrosion of Copper and Zinc”. J. Corrosion Science and Technology, Vol.1, No 1, pp. 66-69.
- Ovri, J. E. and Ofeke, T.B. 1998. “The Corrosion of Mild Steel in Marine Environment”. J. Science Engineering Technology, Vol. 5, No 2, pp. 1117-1129.
- Gregory, O. W. 2004. “Corrosion Resistance of Copper and Brass in Various Media”. J. Corrosion Science and Technology, Vol. 1, No 1, pp. 58-60.