KMID : 1024520050140010097
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Journal of the Environmental Sciences 2005 Volume.14 No. 1 p.97 ~ p.103
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Environmentally Friendly Surface Treatments for Improvement of Corrosion of Steel Sheets: Synergy Effect by Multicoating
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Jeon Sang-Ik
Park Chan-Young Ryou Jin-Ho Lee Won-Ki
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Abstract
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Because of the toxicity of hexavelant chromium ion, treatments of metallic surface with chromate compounds to retard corrosion are undesirable for safety control in industrial uses and protection of environment. In this study, we investigated several compounds such as inorganic, organic, and polymer materials in order to sub¡©stitute the chromate conversion treatment on steel sheet. The corrosion property was investigated in a salt spray tester with 3.5 The results showed that the zirconium/silane/polymer triple coatings on the galvanized steel exhibited a significant retardation of corrosion. Although the multicoating system needs a com¡©plexed processing, we can confirm a possibility of development of a chromate-free chemical conversion treat¡©ment for galvanized steel sheet.
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KEYWORD
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Corrosion, Retardation, Multicoating, Chromate-free
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