Corrosion Inhibition of 304 Stainless Steel, Copper and Nickel Metals Using Mesoporous Silicate (MCM- 41) and 2, 5-Distyrylpyrazine Photopolymer

Corrosion Inhibition of 304 Stainless Steel, Copper and Nickel Metals Using Mesoporous Silicate (MCM- 41) and 2, 5-Distyrylpyrazine Photopolymer

Mesoporous silicate (MCM-41) and 2, 5-distyrylpyrazine photo- polymer (poly-DSP) were used as corrosion protective coatings for 304 stainless steel, copper and nickel metals. Films on metal surfaces were prepared by dip-coating and vapor deposition (CVD, PVD) methods. Poly-DSP thin films formed by v...

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Hauptverfasser: Zakaria, Mohamed B., Elmorsi, Mohamed A., Ebied, El-Zeiny M.
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description Mesoporous silicate (MCM-41) and 2, 5-distyrylpyrazine photo- polymer (poly-DSP) were used as corrosion protective coatings for 304 stainless steel, copper and nickel metals. Films on metal surfaces were prepared by dip-coating and vapor deposition (CVD, PVD) methods. Poly-DSP thin films formed by vapor deposition are expected to be incorporated through pores and micro-cracks of SiO2 thin film resulting in extra corrosion protection upon photo polymerization. MCM-41 thin films were characterized by x-ray diffraction (XRD), infrared (IR), BET and electron microscopy (SEM, TEM) techniques. Corrosion protection was studied in 2M HCl aqueous solutions using weight loss and potentiodynamic polarization techniques. The temperature effect on corrosion rates was also studied and the thermodynamic activation parameters of the corrosion reaction were determined. Different corrosion parameters were evaluated including, corrosion current density, corrosion potential, corrosion rate and Tafel constants. The calculated percentage of inhibition efficiencies of the coated electrodes reaches ca 93% in some cases
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title Corrosion Inhibition of 304 Stainless Steel, Copper and Nickel Metals Using Mesoporous Silicate (MCM- 41) and 2, 5-Distyrylpyrazine Photopolymer
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