한국분말재료학회지 (Journal of Powder Materials)

  • 제14권4호
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  • Pages.238-244
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  • 2007
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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Ni 나노입자의 전기영동 코팅에 의한 전열관 자가보수 기술 개발

Self-repairing Technology by Electrophoresis of Ni Nano-Particles for Heat Exchanger Tubes

  • 이경자 (한국원자력연구원, 원자력나노소재응용랩) ;
  • 이민구 (한국원자력연구원, 원자력나노소재응용랩) ;
  • 이창규 (한국원자력연구원, 원자력나노소재응용랩)
  • Lee, Gyoung-Ja (Nuclear Nanomaterials Development Lab, Korea Atomic Energy Research Institute(KAERI)) ;
  • Lee, Min-Ku (Nuclear Nanomaterials Development Lab, Korea Atomic Energy Research Institute(KAERI)) ;
  • Rhee, Chang-Kyu (Nuclear Nanomaterials Development Lab, Korea Atomic Energy Research Institute(KAERI))
  • 발행 : 2007.08.28
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초록

The electrophoretic deposition process of Ni nano-particles in organic suspension was employed for self-repairing of heat exchanger tubes. For this purpose, Ni nano-particles prepared by levitational gas condensation method were dispersed into the solution of ethanol with the addition of dispersant Hypermer KD2. For electrophoretic deposition of Ni nano-particles on the Ni alloy specimen, constant electric fields of 20 and 100 V $cm^{-1}$ were applied to the specimen in Ni-dispersed solution. It was found that as electrophoretic deposition proceeds, the size of the pit or crack remarkably decreased due to the agglomeration of Ni nano-particles at the pit or crack. This strongly suggests that the electrophoretic mobility of the charged particles is larger for the damaged part with a higher current value rather than outer surfaces with a lower current value.

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참고문헌

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피인용 문헌

  1. Electrophoretic deposition of Ni nanoparticles from suspension on to a Ni plate vol.41, pp.9, 2015, https://doi.org/10.1007/s11164-014-1771-x