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Evaluating Corrosion and Wear Resistance of Ni-Fe(Si-Ti)C Nanocomposite Coating
Mohadeseh Karimi , Mohammad Hossein Enayati , Fatemehsadat Sayyedan
Abstract:   (355 Views)
The aim of this study was to optimize the values of current density and carbide concentration in electrodeposition process of Ni-Fe(Si-Ti)C nanocomposite coating on the AISI 304 stainless steel. The optimal current density in each electrolyte was determined using scanning electron microscope (SEM) images and energy-dispersive spectroscopy (EDS) analysis. Corrosion behavior and wear resistance of the optimized coatings were examined by TOEFL polarization test in 3.5 wt.% NaCl solution and ball-on-disk apparatus, respectively. The values of 30 mA/cm2 and 10 mA/cm2 were obtained to be the optimal current densities for electrolytes containing 6 g/L and 12-18 g/L double carbide, respectively. Electrochemical measurements declared that the corrosion rate decreased from 0.0829×10-5 mA/cm2 to 0.0208×10-5 mA/cm2 with increasing the concentration of carbide in the electrolyte from 6 g/L to 18 g/L. Moreover, the friction coefficient of the substrate was found to be significantly greater than that of the coated samples.
Keywords: Electrodeposition, SiC, TiC, Corrosion resistance, Wear resistance
Full-Text [PDF 1886 kb]   (102 Downloads)    
Type of Study: Research Paper | Subject: Ceramic Materials and Engineering
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