| Authors: |
Lijia Fang* / Chinese Academy of Sciences, P.R. China
Jing Huang/ Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, China
Li Gao/ School of Mechanical Engineering, Qinghai University, China
Hua Li/ Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, China
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| Abstract: |
For marine industries, biofouling causes severe environmental problems and huge negative impacts on marine economy. It plays an important role in deciding the following colonization of other fouling species, such as barnacles, bryozoans, polychaetes, etc. In response to the vast demands for antifouling techniques, a lot of anti-biofouling coating techniques are developed. Super-hydrophobic coating technique is very useful for anti-biofouling applications. It can reduce or eliminate biofouling of ship hulls, piers, power plant intake systems, etc. Traditional techniques to prepare super-hydrophobic coatings have many disadvantages, such as high cost, low productivity and low uniformity. Arc spraying is a low cost and efficient coating preparation technique. This study reports a novel organic-inorganic composite coating prepared by arc spraying. Powder-cored wires have a diameter of 2.0 mm with a filling coefficient of 2026%, a 0.3 mm thick cover, made of stainless steel (0.08% C), and contain a filling powder. In this study, aluminum and fluorinated ethylene propylene (FEP) were used as powders for filling the cored wire. The organic-inorganic composite coating was successfully fabricated and their microstructure, phase, hydrophilic/hydrophobic was examined by transmission electron microscope, field emission-scanning electron microscope, X-ray diffraction, X-ray photoelectron spectroscopy, surface contact angle, etc. Anti-biofouling performance was examined by bacteria adhesion behavior. The organic (FEP) can be retained in the composite coating and the coating exhibited well super-hydrophobicity. These results provide clear insight into potential anti-biofouling applications of the organic-inorganic composite coatings deposited by arc spraying.
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