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http://dx.doi.org/10.3740/MRSK.2002.12.2.153

Effect of Al, Al2O3 Dispersants and Heat Treatment on Deposits from Watt′s Ni Plating Bamth  

Lee, Sang-Baek (Research and Development Center for Automobile Parts and Materials )
Park, Hyeong-Ho (Korea Research Institute of Rare Metals)
Bae, In-Seong (Korea Research Institute of Rare Metals)
Yun, Jae-Sik (Korea Research Institute of Rare Metals)
Kim, Byeong-Il (Material Science and Metallurgical Engineering, Sunchon National University)
Publication Information
Korean Journal of Materials Research / v.12, no.2, 2002 , pp. 153-159 More about this Journal
Abstract
The co-deposited behavior was investigated under varied bath compositions and current densities from Watt Ni plating bath containing Al and A1$_2$O$_3$powders. For single-particle bath, Al and A1$_2$O$_3$particles were agglomerated. The area percentage of A1$_2$O$_3$on plating surface decreased with increasing the current density, while that of Al on plating surface increased. On the other hand, in case of double-particle bath with 1.25g/$\ell$ of Al and 5.0g/$\ell$ of A1$_2$O$_3$5g, the area percentage of Ni-Al-A1$_2$O$_3$increased with increasing current density and the surface morphology was fine without agglomeration. Intermetallic compounds such as $\gamma$'and $\gamma$+$\gamma$' phases appeared when the co-deposited film was annealed.
Keywords
The co-deposited behaviour; agglomeration; intermetallic compounds; Ni-Al-${Al_2}{O_3}$;
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