oa South African Journal of Chemistry - Galvanostatic electrodeposition of Ni-Co alloys in DMSO under a magnetic field : research article
|Article Title||Galvanostatic electrodeposition of Ni-Co alloys in DMSO under a magnetic field : research article|
|© Publisher:||South African Chemical Institute (SACI)|
|Journal||South African Journal of Chemistry|
|Affiliations||1 University of Malaya, Malaysia, 2 University of Malaya, Malaysia, 3 University of Malaya, Malaysia and 4 University of Malaya, Malaysia|
|Publication Date||Jan 2011|
|Pages||17 - 22|
|Keyword(s)||DMSO, Magnetic electrodeposition, Potential enhancement and Roughness|
This paper focuses on the galvanostatic magneto-electrodeposition of Ni-Co alloys in dimethyl sulphoxide (DMSO) in the presence and absence of a permanent parallel magnetic field (PPMF) to the cathode surface. It was found that the mass deposition was enhanced in the presence of PPMF (9 T) compared with the deposition without PPMF. The percentage enhancement potential (ξ%) was elevated (ξ5%=23.11, ξ2%=10.65, ξ0.5%=4.85) with current densities of 5,2 and 0.5 mA cm-2, respectively, in the presence of PPMF (9 T). Atomic force microscopy (AFM) showed that the roughness of the Ni-Co alloy films was reduced from 56.187 to 31.716 nm (at 0.2 mA cm-2) and 97.541 to 52.644 nm (at 0.5 mA cm-2) with applied PPMF (9 T) compared with that without the PPMF. The deposited layers were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive X-ray analysis (EDX).
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