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

WANG Hai-ren,,XIAO Zhen,QU Jun-e,YANG Hong-wei,CAO Zhi-yong,GUO Xing-peng

钢铁研究学报(英文版) ›› 2013, Vol. 20 ›› Issue (12) : 75-81.

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钢铁研究学报(英文版) ›› 2013, Vol. 20 ›› Issue (12) : 75-81.
材料

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

  • WANG Hai-ren1,2,XIAO Zhen2,QU Jun-e2,YANG Hong-wei3,CAO Zhi-yong2,GUO Xing-peng1
作者信息 +

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

  • WANG Hai-ren1,2,XIAO Zhen2,QU Jun-e2,YANG Hong-wei3,CAO Zhi-yong2,GUO Xing-peng1
Author information +
文章历史 +

摘要

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.

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.

关键词

430不锈钢 / 自组装 / 硅烷 / 缓蚀性能

Key words

430 stainless steel (430SS) / Self-assembly / Silane / Corrosion resistance

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王海人, 肖珍, 屈钧娥, . A Comparison Study on Corrosion Resistance of 430 Stainless Steel Surfaces Modified by Alkylsilane and Fluoroalkylsilane SAMs[J]. 钢铁研究学报(英文版), 2013, 20(12): 75-81
YU Hai-Ren, XIAO Zhen, QUE Jun-E, et al. A Comparison Study on Corrosion Resistance of 430 Stainless Steel Surfaces Modified by Alkylsilane and Fluoroalkylsilane SAMs[J]. Journal of Iron and Steel Research International, 2013, 20(12): 75-81
中图分类号: A   

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