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STUDY ON PROPERTIES OF CoNi FILMS WITH Mn DOPING PREPARED BY MAGNETIC FIELDS INDUCED CODEPOSITION TECHNOLOGY

Liang Gang, Yundan Yu, Hongliang Ge, Guoying Wei, Li Jiang and Lixia Sun
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Liang Gang: College of Materials Science and Engineering, China Jiliang University, Hang Zhou 310018, P. R. China
Yundan Yu: College of Materials Science and Engineering, China Jiliang University, Hang Zhou 310018, P. R. China
Hongliang Ge: College of Materials Science and Engineering, China Jiliang University, Hang Zhou 310018, P. R. China
Guoying Wei: College of Materials Science and Engineering, China Jiliang University, Hang Zhou 310018, P. R. China
Li Jiang: College of Materials Science and Engineering, China Jiliang University, Hang Zhou 310018, P. R. China
Lixia Sun: College of Materials Science and Engineering, China Jiliang University, Hang Zhou 310018, P. R. China

Surface Review and Letters (SRL), 2018, vol. 25, issue 01, 1-10

Abstract: Magnetic field parallel to electric field was induced during plating process to prepare CoNiMn alloy films on copper substrate. Electrochemistry mechanism and properties of CoNiMn alloy films were investigated in this paper. Micro magnetohydrodynamic convection phenomenon caused by vertical component of current density and parallel magnetic field due to deformation of current distribution contributed directly to the improvement of cathode current and deposition rate. Cathode current of the CoNiMn plating system increased about 30% with 1T magnetic field induced. It was found that CoNiMn films electrodeposited with magnetic fields basically belonged to a kind of progressive nucleation mode. Higher magnetic intensity intended to obtain CoNiMn films with good crystal structures and highly preferred orientations. With the increase of magnetic intensities, surface morphology of CoNiMn alloy films changed from typically nodular to needle-like structures. Compared with coatings electrodeposited without magnetic field, CoNiMn alloy films prepared with magnetic fields possessed better magnetic properties. Coercivity, remanence and saturation magnetization of samples increased sharply when 1T magnetic field was induced during plating process.

Keywords: CoNiMn alloy films; magnetic field; plating technology (search for similar items in EconPapers)
Date: 2018
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DOI: 10.1142/S0218625X18500373

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