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51315-6129-Corrosion Behavior of IVD and Electroplated Al Coatings on Steel Substrates

Product Number: 51315-6129-SG
ISBN: 6129 2015 CP
Author: Sriraman Rajagopalan
Publication Date: 2015
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Low hydrogen embrittling (LHE) Cd coatings are used for its inherent sacrificial protection property with high strength steel substrates. IVD and electroplated Al coatings are potential replacements for Cd coating due to environmental restriction and work-hazardousness of Cd plating process. The current study aims to investigate the corrosion behaviour of Al coatings in a three electrode electrochemical cell with a saturated calomel electrode as a reference by measuring open circuit potentials (OCP) and polarization technique in 3.5 % NaCl solution. The galvanic coupling characteristics of the Al coatings with the steel counter was also characterized by monitoring the couple potentials and galvanic current measurements. Corrosion behaviour of Al coatings as a result of two different processes were compared to Cd which is a base line reference material. The effect of glass bead compaction on corrosion resistance of IVD Al was also reported.
Low hydrogen embrittling (LHE) Cd coatings are used for its inherent sacrificial protection property with high strength steel substrates. IVD and electroplated Al coatings are potential replacements for Cd coating due to environmental restriction and work-hazardousness of Cd plating process. The current study aims to investigate the corrosion behaviour of Al coatings in a three electrode electrochemical cell with a saturated calomel electrode as a reference by measuring open circuit potentials (OCP) and polarization technique in 3.5 % NaCl solution. The galvanic coupling characteristics of the Al coatings with the steel counter was also characterized by monitoring the couple potentials and galvanic current measurements. Corrosion behaviour of Al coatings as a result of two different processes were compared to Cd which is a base line reference material. The effect of glass bead compaction on corrosion resistance of IVD Al was also reported.
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