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http://dx.doi.org/10.5574/KSOE.2011.25.1.032

Corrosion Resistance of Galvanized Steel by Treating Modified Si Organic/Inorganic Hybrid Coating Solution  

Seo, Hyun-Soo (Defence Agency for Technology and Quality)
Moon, Hee-Joon (Graduate school, Pukyong National University)
Kim, Jung-Ryang (Graduate school, Pukyong National University)
Kim, Jong-Soon (NGE Tech Ltd.)
Ahn, Seok-Hwan (Bukyong Education Center for Vehicle Safety Component Technology, Pukyong National University)
Moon, Chang-Kwon (Materials Science and Engineering, Pukyong National University)
Nam, Ki-Woo (Materials Science and Engineering, Pukyong National University)
Publication Information
Journal of Ocean Engineering and Technology / v.25, no.1, 2011 , pp. 32-38 More about this Journal
Abstract
Galvanized steel has gone through a chemical process to keep it from corroding. The steel gets coated in layers of zinc because rust will not attack this protective metal. For countless outdoor, marine, or industrial applications, galvanized steel is an essential fabrication component. The reduction of the corrosion rate of zinc is an important topic. In the past, a very popular way to reduce the corrosion rate of zinc was to use chemical conversion layers based on $Cr^{+6}$. However, a significant problem that has arisen is that the use of chromium salts is now restricted because of environmental protection legislation. Therefore, it is very important to develop new zinc surface treatments that are environmentally friendly to improve the corrosion resistance of zinc and adhesion with a final organic protective layer. In this study, a Urethane solution (only Urethane 20 wt.%; S-700) and an organic/inorganic solution with Si (Si polysilicate 10 wt.% + Urethane 10 wt.%; LRO-317) are used. Based on the salt spray test of 72 h, S-700 and LRO-317 had a superior effect for the corrosion resistance on EGI and HDGI, respectively.
Keywords
Organic/inorganic hybrid; Electrolytic galvanized; Hot-dip galvanized; Salt spray test; Coating solution; White rust;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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