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A study on the effect of reducing agent content on the thickness of electroless Ni3P deposits on B4C nanoparticles

Published online by Cambridge University Press:  20 February 2013

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Abstract

Deposition of Ni3P nano-scale layer on B4C nanoparticles in four contents of sodium hypophosphite as reducing agent including 5, 10, 15 and 30 g/l via electroless coating were done to investigate the effect of reducing agent content on the coating thickness of deposited Ni3P. The bath pH and temperature was 5.5 and 85 °C, respectively and the coating time was 25 min. The powders were characterized by transmission electron microscopy (TEM) and the phases present were revealed by X-ray diffraction (XRD). Nickel and phosphorous contents of the coatings were measured by inductively coupled plasma analysis (ICP). The results revealed that by increasing the reducing agent content from 5 g/l to 30 g/l the average coating thickness increased from 19 nm to 28 nm. Although the increasing effect of adding sodium hypophosphite content was preserved, there is a critical amount for sodium hypophosphite content to increase the coating thickness.

Type
Research Article
Copyright
© EDP Sciences 2013

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