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
1. School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China 2. Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062, Hubei, China 3. Wuhan Branch Company, SINOPEC, Wuhan 430082, Hubei, China
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
1. School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China 2. Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062, Hubei, China 3. Wuhan Branch Company, SINOPEC, Wuhan 430082, Hubei, China
ժҪ 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.
WANG Hai-ren,,XIAO Zhen,QU Jun-e,YANG Hong-wei,CAO Zhi-yong,GUO Xing-peng. A Comparison Study on Corrosion Resistance of 430 Stainless Steel Surfaces Modified by Alkylsilane and Fluoroalkylsilane SAMs[J]. �й������ڿ���, 2013, 20(12): 75-81.
WANG Hai-ren,,XIAO Zhen,QU Jun-e,YANG Hong-wei,CAO Zhi-yong,GUO Xing-peng. A Comparison Study on Corrosion Resistance of 430 Stainless Steel Surfaces Modified by Alkylsilane and Fluoroalkylsilane SAMs. Chinese Journal of Iron and Steel, 2013, 20(12): 75-81.
2013, Vol. 20 
