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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    Special 1    September 2009

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Environmentally friendly hybrid coating prepared by electro-deposition method at various seawater conditions
Myeong-Hoon LEE1, Kyung-Man MOON1, Jong-Do KIM1, Kang JUN1, Kwang-Ho KIM2

1. Division of Marine System Engineering, Korea Maritime University, Dongsam-Dong, Youngdo,
Busan, 606-791, Korea;
2. National Core Research Center for Hybrid Materials Solution, Pusan National University, Busan, 609-735, Korea

Abstract:The formation mechanism of calcareous deposit films in seawater involves an increase in pH at the metal/solution interface due to cathodic reactions, a raised carbonate ion concentration at the interface and precipitation of inorganic deposits such as CaCO3, Mg(OH)2. Environmentally friendly hybrid calcareous deposit films were formed by an electrochemical technique on steel substrates in various solution environments. And the influence of dissolved gas on formation of calcareous deposit films was investigated by scanning electron microscopy(SEM), energy dispersive spectroscopy(EDS) and X-ray diffractometry(XRD). Consequently, these results showed that formation of good overall calcareous deposited films by dissolved gas in seawater environments can be achieved by controlling the material composition and structure through effective use of electrochemical method.

 

Key words: seawater; dissolved gas; electro-deposition; calcareous deposit coatings

ISSN 1672-7029
CN 43-1423/U

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