The corrosion behavior of hot dip galvanized steel pretrvated with bis-[triethoxysilylpropyl] tetrasulfide （BTESPT） modified with alumina particles was studied. The corrosion resistance of the passiving films was ev...The corrosion behavior of hot dip galvanized steel pretrvated with bis-[triethoxysilylpropyl] tetrasulfide （BTESPT） modified with alumina particles was studied. The corrosion resistance of the passiving films was evaluated by Tafel polarization curve and electrochemical impedance spectroscopy. The films formed on the galvanized steel substrate were characterized by Fourier transform infrared spectroscopy and energy dispersive X-ray spectrometry. The surface morphology of the treated hot dip galvanized steel samples was observed by Field Emission Scanning Electron Microscope. The results show that the pretrvatments on the basis of silane films modified with nanoalumina particles have reduced both anodic and cathodic current densities, and increased total impedance in the measured frequency, consequently, improving corrosion protection for hot dip galvanized steel during immersion in NaCl solutions compared to chromate films and silane films.展开更多
The title compound bis-9-fluorenylmethylphenyl silane (C33H26Si, Mr = 450.63) was synthesized and its structure has been synthesized and determined by X-ray analysis. The crystal is of triclinic, space group P with a ...The title compound bis-9-fluorenylmethylphenyl silane (C33H26Si, Mr = 450.63) was synthesized and its structure has been synthesized and determined by X-ray analysis. The crystal is of triclinic, space group P with a = 9.478(1), b = 10.0956(1), c = 13.0243(2) ? a = 92.668(2), b = 90.809(2), g = 99.348(2)? l = 0.71073 ?, m(MoKa) = 0.115 mm-1, V = 1288.1(2) 3, Z = 2, Dc = 1.219 g/cm3 and F(000) = 476. The structure was refined to R = 0.0437 and wR(F2) = 0.0963 for 3346 observed reflections with I>2s(I). X-ray diffraction analysis reveals that the title compound is bis-9-fluorenylmethylphenyl silane.展开更多
基金the National Natural Science Foundation of China(No.50674022).
文摘The corrosion behavior of hot dip galvanized steel pretrvated with bis-[triethoxysilylpropyl] tetrasulfide （BTESPT） modified with alumina particles was studied. The corrosion resistance of the passiving films was evaluated by Tafel polarization curve and electrochemical impedance spectroscopy. The films formed on the galvanized steel substrate were characterized by Fourier transform infrared spectroscopy and energy dispersive X-ray spectrometry. The surface morphology of the treated hot dip galvanized steel samples was observed by Field Emission Scanning Electron Microscope. The results show that the pretrvatments on the basis of silane films modified with nanoalumina particles have reduced both anodic and cathodic current densities, and increased total impedance in the measured frequency, consequently, improving corrosion protection for hot dip galvanized steel during immersion in NaCl solutions compared to chromate films and silane films.
文摘The title compound bis-9-fluorenylmethylphenyl silane (C33H26Si, Mr = 450.63) was synthesized and its structure has been synthesized and determined by X-ray analysis. The crystal is of triclinic, space group P with a = 9.478(1), b = 10.0956(1), c = 13.0243(2) ? a = 92.668(2), b = 90.809(2), g = 99.348(2)? l = 0.71073 ?, m(MoKa) = 0.115 mm-1, V = 1288.1(2) 3, Z = 2, Dc = 1.219 g/cm3 and F(000) = 476. The structure was refined to R = 0.0437 and wR(F2) = 0.0963 for 3346 observed reflections with I>2s(I). X-ray diffraction analysis reveals that the title compound is bis-9-fluorenylmethylphenyl silane.
