科研之友
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摘要
The anticorrosion behavior of the superhydrophobic composite coating in sterilized seawater is investigated using x-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), electrochemical impedance spectroscopy (EIS), and water contact angle measurement. The results show that when immersed into sterilized seawater, slight surface damage has been observed, leading to the decrease of water contact angle. The electrochemical measurements, however, reveal good protection of steel substrate from the composite coating. From the viewpoint of anticorrosion ability, the composite coating maintains well after 168 h immersion in seawater and can provide carbon steel with good protection from seawater attack. The corrosion mechanism of the coated samples immersed in seawater is proposed through the schematic diagram. The corrosion medium reaches the carbon steel substrate through the channel. forming in the composite coating. With the increase of the immersion time, the corrosion pits develop into the carbon steel.
- 出版日期2014-4
- 单位中国海洋大学
