Electrodeposition of Zn鈥揘i Multiwalled Carbon Nanotube Nanocomposites and Their Properties

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• 作者：Ranganatha Sudhakar ; Venkatarangaiah T. Venkatesha
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：May 15, 2013
• 年：2013
• 卷：52
• 期：19
• 页码：6422-6429
• 全文大小：504K
• 年卷期：v.52,no.19(May 15, 2013)
• ISSN：1520-5045

文摘

The Zn鈥揘i composite coatings on mild steel substrate were prepared by incorporating multiwalled carbon nanotubes (MWCNT) through electrodeposition. The reinforcement of MWCNTs was increased by achieving high dispersion in the plating electrolyte. Surfactants cetyltriammonium bromide (CTAB), sodium lauryl sulfate (SLS), and Triton X 100 were made use. The individual CNTs are active in the UV鈥搗is region, and UV鈥搗is spectroscopy was utilized to evaluate the extent of dispersion. Dynamic light scattering technique (DLS) was applied to calculate particle size distribution statistics with different surfactants. Scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy dispersive X-ray analysis (EDX) were utilized to study the deposits鈥?morphology, structure, and composition, respectively. The coated specimens were tested for their corrosion resistance in 3.5% NaCl through polarization and electrochemical impedance spectroscopic (EIS) studies. Surfactants deagglomerated the particles and enhanced their incorporation in the metal matrix which helped to obtain composites with higher corrosion resistance and increased hardness.