Electrodeposition Of Nickel Aluminide Based Alloy On Fe Substrate In Deep Eutectic Solvent

Lim, Yan Ying (2019) Electrodeposition Of Nickel Aluminide Based Alloy On Fe Substrate In Deep Eutectic Solvent. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The investigation of the use of deep eutectic solvent as the electrolyte in the electrodeposition of Nickel Aluminide is conducted in this study due to the fabrication of binary alloy in deep eutectic solvent has not been fully explored. The aim of this study is to produce a coating of Nickel Aluminide based alloy on Fe substrate using deep eutectic solvent as electrolyte by electrodeposition. Fe substrate is first polished until a mirror-like surface. Next, the substrate degreased, rinsed using the ethanol and distilled water respectively. Then, the substrate were mounted by epoxy resin. Finally, the sample was electrodeposited with current density of 0.001, 0.002, 0.004, 0.005, 0.01 A/dm2, and plating time from 15, 30 and 45 minutes. The plating bath consists of Nickel (Ⅱ) Chloride and Aluminium (Ⅲ) Chloride were mixed homogenously with the ChCl:EG solution. Scanning electron microscope (SEM) and X-ray diffraction (XRD) were used to determine the surface morphology and the elemental composition of the coated samples. Then, electrochemical measurements were done in 3.5 wt.% of sodium chloride to study the corrosion behaviour of the coated alloy. Lastly, hardness test and surface roughness of the coated samples were determined by micro Vickers hardness tester and profilometer respectively.

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