Journal
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume 630, Issue 1-2, Pages 42-48Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2009.02.018
Keywords
Magnetic Field; Composite coating; Nickel; Nano-alumina; Electrochemical analysis
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Funding
- Science and Technology Commission of Shanghai Municipality [075207015]
- Program for Changjiang Scholars
- Innovative Research Team in University [IRT0739]
- Shanghai University's Innovation Funds
- Shanghai University Instrument analyses research center
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The influence of static horizontal magnetic field on the electrocodeposition process of Ni/nano-Al2O3 composite coating has been studied in a modified Watts electrolyte through stationary and dynamic electrochemical investigations. The results showed that the mass transport process and charge transfer process were enhanced by applying magnetic field. The results of SEM and XRD showed that the nickel grains were refined by adding nano-particles and (220) crystal orientation was strengthened by increasing magnetic flux density (MFD). Alumina particles content and deposit rate increased with increasing MFD due to the magneto hydrodynamic effect (MHD effect). However, the current efficiency decreased with particle content increased. (C) 2009 Elsevier B.V. All rights reserved.
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