Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
권호 표지
DOI QR코드

DOI QR Code

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

Ni 나노입자의 전기영동 코팅에 의한 전열관 자가보수 기술 개발

  • 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))
  • 이경자 (한국원자력연구원, 원자력나노소재응용랩) ;
  • 이민구 (한국원자력연구원, 원자력나노소재응용랩) ;
  • 이창규 (한국원자력연구원, 원자력나노소재응용랩)
  • Published : 2007.08.28
Download PDF
⟨ Previous Next ⟩

Abstract

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.

Keywords

References

  1. J. R. Park, Z. Szklarska-Smialowska: Corrosion, 41 (1985) 665 https://doi.org/10.5006/1.3583001
  2. V. B. Rajan, G. S. Was: Corrosion, 43 (1987) 305 https://doi.org/10.1002/maco.19920430611
  3. W. E. Windes, J. Zimmerman, I. E. Reimanis: Surf. Coat. Tech., 157 (2002) 267 https://doi.org/10.1016/S0257-8972(02)00163-9
  4. K. Kamada, M. Mukai, Y. Matsumoto: Mater. Lett., 57 (2003) 2348 https://doi.org/10.1016/S0167-577X(02)01223-5
  5. S. Put, J. Vleugels, O. V. der Biest: J. Mater. Proc. Tech., 143 (2003) 572 https://doi.org/10.1016/S0924-0136(03)00370-4
  6. T. Uchikoshi, T. S. Suzuki, H. Okuyama, Y. Sakka, P. S. Nicholson: J. Eup. Ceram. Soc., 24 (2004) 225 https://doi.org/10.1016/S0955-2219(03)00242-5
  7. C. Kaya, F. Kaya, B. Su, B. Thomas, A. R. Boccaccini: Surf. Coat. Technol., 191 (2005) 303 https://doi.org/10.1016/j.surfcoat.2004.03.042
  8. A. Y. Yermakov, M. A. Uimin, A. A. Mysik and T. Goto: Mater. Sci. Forum, 386 (2002) 455 https://doi.org/10.4028/www.scientific.net/MSF.386-388.455
  9. Y. R. Uhrn, W. W. Kim, C. K. Rhee: Phys. Stat. Sol. (a), 201(8) (2004) 1934 https://doi.org/10.1002/pssa.200304560
  10. Y. R. Uhm, B. S. Han, M. K. Lee, S. J. Hong, C. K. Rhee: Mater. Sci. and Eng. A, 449 (2007) 813 https://doi.org/10.1016/j.msea.2006.02.427
  11. P. Sarkar, S. Datta and P. S. Nicholson: Composites Part B, 28B (1997) 49 https://doi.org/10.1016/S1359-8368(96)00022-4

Cited by

  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