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Corrosion performance of zinc chromate (hexa:tri Cr) complex compound coating on zinc coated components

Author(s): N.H.A. Hamid & E.B. Hamzah Abstract: Zinc chromate complex compound is a thin coating formed through a passivation process produced by a chemical or electrochemical treatment of a metallic surface that gives a superficial layer. This layer which is actually a compound of the metal gives corrosion protection and has a profound influence on the properties of the coating. The chromate film was produced from eliminating liquid which consists of three different chemical compositions comprising of chromic ions (hexa & tri Cr) and acids. The zinc plated steel sheet were then immersed in the solution and approximately 0.5-3.0 jam thick chromate film was formed on the metal sheet surface. It was found that pH value and immersion time have a significant eff... Pages: 7 Size: 808 kb Paper DOI: 10.2495/DM000561

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Download the Full Article This article is part of the WIT OpenView scheme and you can download the full text Adobe PDF article for FREE by clicking the 'Openview' icon to the right.