Electrophoretic deposition of Ni nanoparticles from suspension on to a Ni plate

Ni nanoparticles of average size 70 nm were dispersed in a mixed solution of ethanol (100 ml) and a dispersant (Hypermer KD-2, HKD-2). The suspension was ultrasonicated for 90 min, then electrophoretic deposition (EPD) was performed with deposition times from 5 to 10 min at a constant potential of 1...

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Veröffentlicht in:Research on chemical intermediates 2015-09, Vol.41 (9), p.6721-6730
Hauptverfasser: Park, Keun-Yong, Uhm, Young Rang, Son, Kwang Jae, Park, Deok-Yong
Format: Artikel
Sprache:eng
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Zusammenfassung:Ni nanoparticles of average size 70 nm were dispersed in a mixed solution of ethanol (100 ml) and a dispersant (Hypermer KD-2, HKD-2). The suspension was ultrasonicated for 90 min, then electrophoretic deposition (EPD) was performed with deposition times from 5 to 10 min at a constant potential of 180 V. The highest absolute value of the zeta potential was −32.5 mV at 1 wt% HKD-2. Coating of the Ni particles on an Ni plate was performed by use of a suspension with high conductivity. Important conditions for electrophoretic deposition of Ni particles on to an Ni plate are high conductivity of the suspension and a large absolute value of the zeta potential. Significant agglomeration of Ni particles was observed during deposition when the EPD time was increased.
ISSN:0922-6168
1568-5675
DOI:10.1007/s11164-014-1771-x