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Evaluation of Corrosion Behavior of Different Grades of Cast Iron Insodium Chloride Solutions

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Abstract:

In this work, the corrosion behavior of different grades of cast iron in 3.5% and 5% of NaClsolution was evaluated. The samples used in this work are; Grey cast iron (GI), ductile cast iron(DI), austempered ductile cast iron (ADI), intercritically austempered cast iron (IADI) and Ni-Resist cast iron. The study was carried out using the Open- Circuit technique (OPC),Potentiodynamic polarization (PP), and electrochemical impedance spectroscopy (EIS)measurements and complemented by Scanning electron microscopy (SEM) and Energydispersive X-ray analysis (EDAX). The results obtained showed that the austempering heattreatment and nickel addition improves the corrosion resistance of cast iron. The order ofcorrosion resistance in NaCl solution is as follows: Ni-Resist > ADI > IADI > DI > GI.

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Periodical:

Key Engineering Materials (Volume 835)

Pages:

223-228

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.835.223

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Online since:

March 2020

Authors:

Adel Nofal, Amal S.I. Ahmed, Wafaa A. Ghanem, W.A. Hussein, Nanis K. Mohamed*

Keywords:

Austempered Ductile Iron, Cast Iron, Corrosion, Ni-Resist, Potentiodynamic Polarization

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© 2020 Trans Tech Publications Ltd. All Rights Reserved

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