Assessment of corrosion behavior of ductile irons by factorial experiments
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Date
2009
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Abstract
The corrosion behavior of unalloyed and alloyed ductile irons (as cast, annealed, and cold worked) in sea water, dilute sulfuric acid, and dilute sodium hydroxide solutions was assessed. Specimen history had a significant effect on the corrosion potential except in ductile iron alloyed with Ni. When the specimens were subjected to different levels of cold working, the corrosion rate was influenced by both the history and the medium. Temperature had a significant effect on the corrosion rate except in the case of unalloyed ductile iron. Factorial experiments indicated that the cold-worked samples were more sensitive to the effect of temperature and composition on the corrosion rate as compared to annealed and as-cast samples. The medium had a significant effect on the corrosion rate in all the cases. © 2009 ASM International.
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Keywords
A: ductile iron, As-cast, C: casting, Cold worked, Corrosion behavior, Corrosion potentials, Dilute sulfuric acid, Ductile iron, Effect of temperature, Factorial experiment, Sodium hydroxide solutions, Cold working, Corrosive effects, Ductility, Nodular iron, Seawater, Sodium, Sulfuric acid, Thermal effects, Corrosion rate
Citation
Journal of Materials Engineering and Performance, 2009, 18, 9, pp. 1241-1247