[Table of Contents]

Plasma and Fusion Research

Volume 6, 1405146 (2011)

Regular Articles

Corrosion Characteristics of Hydrogen Permeation Materials in Molten Salt Flinak
Takuya NAGASAKA, Masatoshi KONDO, Akio SAGARA and Takeo MUROGA
National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
(Received 2 October 2010 / Accepted 10 August 2011 / Published 2 December 2011)

Abstract

Corrosion characteristics of hydrogen-permeation materials (e.g., Pd-Ag, pure V, Nb, and Ta) are examined in molten salt Flinak, in order to develop a hydrogen-recovery section for a Flinak forced convection loop “Operational Recovery of Separated Hydrogen and Heat Inquiry -1 (Orosh2 i-1).” It is determined that their corrosion rate is not significant at 873 K under static conditions, compared with that of JLF-1 ferritic steel. However, pure V indicates a relatively high weight gain, likely due to O absorption. Dissolution of highly radioactive elements (e.g., Ag and Nb) is also indicated. The corrosion mechanisms and characteristics of the constituent elements are analyzed.

Keywords

liquid breeder blanket, Flibe, Flinak, palladium-silver, group 5 elements

DOI: 10.1585/pfr.6.1405146

Full Text

PDF format (2.7Mbytes) PDF Download

References

  • [1] A. Sagara et al., Fusion Eng. Des. 81, 2703 (2006).
  • [2] S. Fukada et al., Fusion Sci. Technol. 41, 1054 (2002).
  • [3] S. Fukada et al., Fusion Eng. Des. 81, 477 (2006).
  • [4] M. Kondo et al., The 9th Intl. Sympo. Fusion Nucl. Technol. (ISFNT-9), Oct. 11-16, 2009, Dalian China.
  • [5] S. Yamauchi, Netsu Sokutei 12, 142 (1985) (in Japanese).
  • [6] H. Yokokawa, Netsu Sokutei 12, 144 (1985) (in Japanese).
  • [7] R.C. Svedberg and R.W. Buckman, Jr., Intel. Met. Rev. 25, 223 (1980).
  • [8] D.L. Harrod et al., Intl. Met. Rev. 25, 163 (1980).
  • [9] E.T. Cheng et al., J. Nucl. Mater. 258-263, 1767 (1998).
  • [10] Y. Wu et al., J. Nucl. Mater. 307-311, 1026 (2002).

This paper may be cited as follows:

Takuya NAGASAKA, Masatoshi KONDO, Akio SAGARA and Takeo MUROGA, Plasma Fusion Res. 6, 1405146 (2011).