Study of corrosion behavior of sprayed zinc-aluminum (ZAZA) coatings in a marine environment

Science and Engineering of Composite Materials

Li Xiao¹  Li Yantao²  Hou Baorong² 

[1] ;Department of Marine Corrosion, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, P.R. China;

关键词: corrosion;    organic coating;    thermal spray;    zinc-aluminum;   

DOI  :  10.1515/secm-2011-0015

来源: DOAJ

【 摘 要 】

Zinc-aluminum coatings were prepared; parts of them were sealed with an organic coating; and the behavior and mechanism of corrosion were studied by means of in situ plates test, salt spray test, and electrochemical impedance spectroscopy. A scanning electron microscope was used to assess the surface of the zinc-aluminum coatings, which showed roughness and some defects that would reduce the protective effect. Organic coatings improve the protective effect by sealing the defects of the metal coating. A multilayer structure is not only expensive but would also destroy the continuity of the coating if the zinc corrodes.

【 授权许可】

Unknown