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Volume 4, Issue 5, September 2015, Page: 333-342
Corrosion of Heat Treated Electroless-Ni Plated Mild Carbon Steels in Dilute H2SO4
Olawale Olarewaju Ajibola, Department of Metallurgical and Materials Engineering, Federal University of Technology, Akure, Nigeria; Department of Materials and Metallurgical Engineering, Federal University Oye Ekiti, Oye Ekiti, Nigeria
Abdullahi O. Adebayo, Department of Materials and Metallurgical Engineering, Federal University Oye Ekiti, Oye Ekiti, Nigeria
Daniel Toyin Oloruntoba, Department of Metallurgical and Materials Engineering, Federal University of Technology, Akure, Nigeria
Received: Aug. 5, 2015;       Accepted: Aug. 14, 2015;       Published: Oct. 16, 2015
DOI: 10.11648/j.ijmsa.20150405.18      View  5028      Downloads  112
Abstract
The corrosion of heat-treated Electroless-Nickel (EN) plated mild carbon steel (MCS) in dilute H2SO4 is investigated and reported in the study. The MCS samples were electroless-Ni plated in alkaline Nimudeen 850. EN plated samples were soaked at different selected temperatures between 150-370 °C at constant time. The weight loss of the specimens by full immersion method was employed to assess the corrosion damage and corrosion rates of the as-received, EN plated MCS and four heat treated EN plated samples in the 0.5 M H2SO4 solution. The test specimens were regularly examined at every 12 hrs interval for 30 days (720 hrs). The materials corrodes in 0.5 M H2SO4 in the order of MCS10 > MCS14 > MCS15 > MCS11 > MCS13 > MCS12. Based on the results obtained, it will be justified to choose EN-plated samples (MCS 11) and the heat treated EN film (MCS12 and MCS13) for the purposed of solving the problem of corrosion in the medium. This is because; the application of EN deposition reduced the corrosion of MCS at much lower rate than the heat-treated EN film (MCS14 and MCS15) in 0.5 M H2SO4 environment. Atomic Absorption Spectrometer (AAS) Thermo series 2000 model and Scanning Electron Microscopy (SEM) with the Energy Dispersive X-Ray (EDX) facilities (Jeol JSM-7600F model) were used to ascertain the chemical compositions and the microstructures of samples.
Keywords
Corrosion, Heat Treatment, Electroless-Ni Plating, Mild Carbon Steel, Protective EN Film
To cite this article
Olawale Olarewaju Ajibola, Abdullahi O. Adebayo, Daniel Toyin Oloruntoba, Corrosion of Heat Treated Electroless-Ni Plated Mild Carbon Steels in Dilute H2SO4, International Journal of Materials Science and Applications. Vol. 4, No. 5, 2015, pp. 333-342. doi: 10.11648/j.ijmsa.20150405.18
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