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- W3149096426 abstract "A superhydrophobic ZnAl coating was prepared by the electric arc spraying technology and then surface modification by stearic acid/ethanol. The surface wettability, morphology and chemical structure of the ZnAl coating before and after modification were characterized by contact angle measurement(OCA-20), scanning electron microscope(SEM) and artificial FTIR spectrometer(ATR), respectively. The impedance spectrum and polarization curves of the coatings were measuared by electrochemical workstation(Solartron Analytical) with three electrodes system. The results show that the as sprayed ZnAl coating consists of irregular micro-and nano-sized alloy particles and pores, and exhibits clear hydrophilicity, which may be ascribed to the high surface energy of metallic coating. After the surface modification with stearic acid, the static contact angle of the coating reached 153.8° with a rolling angle less than 10°, because there exsited a large number of hydrophobic long alkyl chains on the surface of the modified Zn Al coating. In addition, the surface modification could significantly enhance the corrosion resistance of ZnAl coating due to that the thin hydrophobic film plays an important role in supression of the fall off and dissolution of corrosion products on the ZnAl coating, leading to the increase of charge transfer resistance and the corrosion current density." @default.
- W3149096426 created "2021-04-13" @default.
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- W3149096426 date "2015-01-01" @default.
- W3149096426 modified "2023-09-23" @default.
- W3149096426 title "Preparation and Properties of Superhydrophobizted Sprayed Zn-Al Coating" @default.
- W3149096426 hasPublicationYear "2015" @default.
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