Influence of Ultrasound on the Properties of Electroless Plated Nickel |
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| Authors: | L. X. Yang W T. Hou Y. S. Wu |
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| Affiliation: | 1. School of the Metallurgy and Materials, The University of Birmingham, Birmingham B15 2TT, U.K.;2. Department of Chemical Engineering, Shangdong University of Technology, Jinan, Shangdong, PR China 250032 |
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| Abstract: | Ultrasonic agitation during electroless plating nickel affects the structure and properties of the deposits. In this work, a complete study was made of the action of ultrasound on the plating rate, micro-hardness, phosphorus content and corrosion properties of electroless plated deposits. It was found that in the presence of the ultrasound, the plating rate and micro-hardness of as-deposited were increased by about 30 and 10 percent respectively, whilst the phosphorus content was decreased from 10.49 to 8.39 at%. The changes in these parameters, in turn, affect the corrosion behaviour of the electroless deposits. The deposit formed with ultrasound exhibited active corrosion characteristics, whilst the deposit formed without ultrasound had a passive behaviour in 0.2 M H2SO4 solution. |
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| Keywords: | nickel polarization Amorphous structures |
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