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Recent Research from Kyung Hee University Highlight Findings in Hydrochloric Acid (Electrochemical study of corrosion behavior of graphene coatings...

July 11, 2014



Recent Research from Kyung Hee University Highlight Findings in Hydrochloric Acid (Electrochemical study of corrosion behavior of graphene coatings on copper and aluminum in a chloride solution)

By a News Reporter-Staff News Editor at Science Letter -- Investigators publish new report on Hydrochloric Acid. According to news originating from Yongin, South Korea, by NewsRx correspondents, research stated, "Electrochemical characteristics and corrosion behavior of graphene coatings on Cu and Al in a 0.1 M NaCl solution were investigated. The graphene coatings were deposited on a Cu surface by chemical vapor deposition."

Our news journalists obtained a quote from the research from Kyung Hee University, "Multiple graphene layers were then mechanically transferred from the growth substrate, Cu, onto Al surface by a transfer technique. The corrosion stability of graphene coatings was determined by electrochemical impedance spectroscopy and open circuit potential, while the corrosion rate was evaluated using potentiodynamic sweep measurements. Surface morphologies of the graphene coatings were analyzed by scanning electron microscopy and energy dispersive spectroscopy. Obtained results indicate that Cu coated with graphene grown using chemical vapor deposition shows corrosion-inhibiting properties in 0.1 M NaCl. On the other hand, Al coated with a multilayer graphene film mechanically transferred from the Cu surface exhibits electrochemical characteristics similar to an Al oxide on bare Al."

According to the news editors, the research concluded: "Better protective properties of graphene coating on Cu compared to the graphene coating on Al were observed, probably due to the breakage of Al oxide film, causing the corrosion of Al to proceed rapidly in the presence of chloride electrolyte."

For more information on this research see: Electrochemical study of corrosion behavior of graphene coatings on copper and aluminum in a chloride solution. Carbon, 2014;75():335-344. Carbon can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; Carbon - www.elsevier.com/wps/product/cws_home/258)

The news correspondents report that additional information may be obtained from V. Migkovic-Stankovic, Kyung Hee Univ, Coll Engn, Dept. of Mech Engn, Yongin 446701, South Korea. Additional authors for this research include I. Jevremovic, I. Jung and K. Rhee (see also Hydrochloric Acid).

Keywords for this news article include: Asia, Yongin, Anions, Chemistry, Chlorides, South Korea, Nanotechnology, Electrochemical, Hydrochloric Acid, Emerging Technologies, Chemical Vapor Deposition

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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