Corrosion and Algal Adhesion Behaviors of HVOF-Sprayed Fe-Based Amorphous Coatings for Marine Applications
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In this study, Fe-based amorphous/nanocrystalline coatings consisting of Fe53Cr19Zr7Mo2C18Si were fabricated by high-velocity oxy-fuel spray. For comparative study, further crystallization annealing treatment at 750 °C was carried out for the coatings. The microstructure, corrosion resistance and algal adhesion behaviors of the as-sprayed and annealed coatings were systematically investigated by scanning electron microscopy, x-ray diffraction, transmission electron microscopy, electrochemical testing and laser confocal scanning microscopy, respectively. Results show that the as-sprayed coatings exhibited excellent corrosion resistance and decreased algal adhesion, while the annealed coatings displayed compromised anti-corrosion performances, but significantly inhibited the adhesion of typical algae Phaeodactylum tricornutum.
Keywordsalgal adhesion corrosion resistance Fe-based amorphous coating high-velocity oxy-fuel marine coatings nanocrystalline
This work was supported by CAS-Iranian Vice Presidency for Science and Technology Joint Research Project (Grant # 174433KYSB20160085), National Natural Science Foundation of China (Grant # 41706076), Qinghai Provincial Innovation Platform Program (No. 2017-ZJ-Y17) and Key Research and Development Program of Zhejiang Province (Grant # 2017C01003).
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