Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Effect of Al, Al2O3 Dispersants and Heat Treatment on Deposits from Watt′s Ni Plating Bamth

와트 Ni 도금욕에서 도금 피막에 미치는 Al, Al2O3 분산제 및 열처리의 영향

  • 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)
  • 이상백 (자동차부품 및 소재연구개발센터) ;
  • 박형호 (회유금속 소재 연구소) ;
  • 배인성 (회유금속 소재 연구소) ;
  • 윤재식 (회유금속 소재 연구소) ;
  • 김병일 (순천대학교 재료·금속공학과)
  • Published : 2002.02.01
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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.

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References

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