Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
권호 표지

Effect of Geometrical Shape and Cold Work on Deformation of the Hydrogen Absorption Metal with Hydrogen Absorption-Desorption Cycling

수소저장-방출싸이클링에 의한 수소저장금속의 변형거동에 관한 형상 및 가공의 영향

  • Jeong, Y.G. (School of Mechanical Eng., Kumoh National University of Technology)
  • 정영관 (국립금오공과대학교 기계공학부)
  • Published : 2003.09.15
Download PDF
⟨ Previous Next ⟩

Abstract

By using the electrochemical method, the relation between the deformation and the geometrical shape, and the effect of cold work on hydrogen absorption-desorption cycling in palladium were investigated, In order to study this problem, four kinds of the Pd specimens used were plates and bars as cold worked and annealed states. As results, it is found that the deformation of thickness direction in the palladium plates increased whereas other lateral directions decreased. But the palladium bars showed the same deformation ratio in all directions because of uniform distribution of the $\beta$ phase. Grains in the plate specimens were greatly deformed after hydrogenation cycling whereas grains in the bar specimens were pulverized. Also, deterioration of the hydrogen absorption rate of the bar specimen was larger than the plate specimen. And the effect of cold work on hydrogen absorption capacity was relatively small.

Keywords

Acknowledgement

Supported by : 금오공과대학교

References

  1. E. Tamura: "Hydrogen storage alloys", S . T . S, 1998
  2. H. Habaki, Y. Hayasi: J. Japan Inst. Metals, Vol. 49, 1985, p. 327 https://doi.org/10.2320/jinstmet1952.49.5_327
  3. N. Ogino, M. Nagahama, A. Yamata: J. Japan InstMetals, Vol. 52, 1988, p. 395
  4. T. Kabudomoh, N. Ohnishi: Materia Japan, Vol. 36, 1997. 4, p. 298 https://doi.org/10.2320/materia.36.298
  5. H. Uenaka, Y. Shita, K. Kumashiro: Materia Japan, Vol. 36, 1997, p. 104 https://doi.org/10.2320/materia.36.104
  6. H. Miyamura, l. sakai,N. Kunyama, H. Nakayama, I. Uehaia: Boundary, Vol 34. 1994.11
  7. H. Miyamura, T. Sakai: Materia Japan, Vol. 34, 1995, p. 189 https://doi.org/10.2320/materia.34.189
  8. Y. Sakai, Y. Watanabe, K. Otha, N. Kamiya, K. Mori : J. Soc. Mat. Sci., Japan, Vol. 46, 1997, p. 532 https://doi.org/10.2472/jsms.46.532
  9. Y.G. Jung, K.H. Kim, K.J. Lee : J. Korean Hydrogen Soc, Vol. 12, 2001, p. 121
  10. Y.G. Jung, K.H. Kim, S.W. Kim : J. Korean Hydrogen Soc, Vol. 12, 2001, p. 247
  11. F.A. Lewis: "The Palladium Hydrogen System", Academic Press, 1967