Corrosion Susceptibility of a 0.35%C Steel in Seawater Electrolyte Using the Electrochemical Method

Ayodele Samuel Adeniyi; Mary Awotunde

doi:10.4028/www.scientific.net/JERA.27.20

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Corrosion Susceptibility of a 0.35%C Steel in Seawater Electrolyte Using the Electrochemical Method

Abstract:

The Tafel extrapolation and linear polarization methods were used as effective measures for determining the corrosion susceptibility of a spheroidized 0.35%C steel with sea water as the electrolyte. Eight pieces of steel were machined to length 5mm by 10mm in diameter. Two pieces each were heat treated at 600°C, 700°C and 800°C respectively and two pieces left as control. Electro-chemical experiments were carried out to obtain the best potential and anodic current of samples immersed in an electrolyte (seawater) at varying anodic potential of-0.7mv, -0.6mv, -0.5mv and-0.4mv respectively. The results showed that the sample with the least corrosion rate were the samples spheroidized at 700°C. They appeared to have the highest electrode potential value of-0.6mv and 800°C spheroidized samples had the least electrode potential value of-0.65mv at the end of 2000seconds respectively. From the results obtained, the samples spheroidized at 700°C appeared to be most suitable for seawater environment.

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International Journal of Engineering Research in Africa Vol. 27

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International Journal of Engineering Research in Africa (Volume 27)

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20-26

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https://doi.org/10.4028/www.scientific.net/JERA.27.20

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December 2016

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Ayodele Samuel Adeniyi, Mary Awotunde*

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Anodic Current, Corrosion Susceptibility, Electrochemical, Electrode Potential, Spheroidized

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