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A Comparison Study on Corrosion Resistance of 430 Stainless Steel Surfaces Modified by Alkylsilane and Fluoroalkylsilane SAMs

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Abstract

The self-assembly monolayers (SAMs) of n-dodecyltriethoxysilane (DTES) and 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane (PFDS) on the surface of the 430 stainless steel (430SS) were prepared and their corrosion protection performance was investigated by potentiodynamic polarization, Fourier transform infrared spectroscopy (FTIR) -attenuated total reflection (ATR), static contact angle and atomic force microscopy (AFM). The results showed that the alkali pretreatment and the water added into the self-assembly solution could generate more hydroxyls on the 430SS surface, and then enhanced the adsorption of the SAMs. A suitable temperature of the self-assembly solution is important for the formation of the SAMs. The silane SAMs were chemically adsorbed on the 430SS substrates by Fe-O-Si bonds. In all cases tested, PFDS has a better inhibition effect compared with DTES, and the difference in inhibition effect is most marked at the lowest concentration of 1 mmol/L.

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China

    Hai-ren Wang (Doctor, Professor) & Xing-peng Guo (Doctor, Professor)

  2. Faculty of Materials Science and Engineering, Hubei University, Wuhan, Hubei, 430062, China

    Hai-ren Wang (Doctor, Professor), Zhen Xiao, Jun-e Qu & Zhi-yong Cao

  3. Wuhan Branch Company, SINOPEC, Wuhan, Hubei, 430082, China

    Hong-wei Yang

Authors
  1. Hai-ren Wang
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  2. Zhen Xiao
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  3. Jun-e Qu
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  4. Hong-wei Yang
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  5. Zhi-yong Cao
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  6. Xing-peng Guo
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Correspondence to Xing-peng Guo.

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Wang, Hr., Xiao, Z., Qu, Je. et al. A Comparison Study on Corrosion Resistance of 430 Stainless Steel Surfaces Modified by Alkylsilane and Fluoroalkylsilane SAMs. J. Iron Steel Res. Int. 20, 75–81 (2013). https://doi.org/10.1016/S1006-706X(13)60219-8

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  • DOI: https://doi.org/10.1016/S1006-706X(13)60219-8

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