Authors: Bin Hui Jian Li Lijuan Wang
Publish Date: 2014/07/03
Volume: 48, Issue: 5, Pages: 961-979
Abstract
A novel and simple electroless Ni–Cu–P plating process was used for preparing corrosionresistant and electromagnetic interference shielding woodbased composite The effects of CuSO4·5H2O concentration pH value in the plating solution and operation temperature on the metal deposition surface resistivity chemical composition corrosion resistance and surface morphology of the composite were investigated The surface morphologies were observed by using scanning electron microscopy and the chemical compositions were analyzed by Xray energy dispersive spectrometer The electromagnetic shielding effectiveness ESE was measured by spectrum analyzer The corrosion resistance was evaluated by potentiodynamic corrosion measurement The results show that metal deposition increases with pH value and temperature increase however it decreases with CuSO4·5H2O concentration increase The corrosion resistance of the plated Ni–Cu–P coatings obviously depends on the total content of Cu and P in the coating Higher total content of Cu and P leads to higher corrosion resistance The optimum conditions are as follows CuSO4·5H2O concentration of 10 g/L pH value of 95 and operation temperature of 90 °C The obtained coating contains 7741 Ni 896 Cu and 1363 P The woodbased composite exhibits higher corrosion resistance and ESE of around 60 dB in frequencies ranging from 9 kHz to 15 GHz In this paper a promising process for corrosionresistant and electromagnetic shielding woodbased composites was developed
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