[Table of Contents]

Plasma and Fusion Research

Volume 8, 3405053 (2013)

Regular Articles


Corrosion Characteristics of RAFM Steels and Unalloyed Metals in Static Pb-17Li
Masatoshi KONDO and Takeo MUROGA1)
Tokai University, 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa 259-1292, Japan
1)
National Institute for Fusion Science, Toki, Gifu 502-5292, Japan
(Received 15 May 2012 / Accepted 21 January 2013 / Published 22 May 2013)

Abstract

The corrosion characteristics of reduced activation ferritic martensitic steels, JLF-1 (Fe-9Cr-1.94W-0.09C) and 9Cr-ODS (Fe-9Cr-1.97W-0.14C-0.29Y-0.23Ti), and unalloyed metals of Cr, W and Mo in liquid Pb-17Li were investigated by means of static corrosion tests at 600°C for 500 hours. The corrosion of the JLF-1 steel was based on the dissolution of Fe and Cr from the steel surfaces in the Pb-17Li. The dissolution type corrosion of the 9Cr-ODS steel was based on the strong depletion of Cr, W and O at the steel surface. The corrosion of the unalloyed Cr specimen in the Pb-17Li was much larger than that based on the Cr solubility in the Pb-17Li when a Mo crucible was used in the corrosion test. The corrosion was promoted under an unsaturated condition because the wetted surface of the Mo crucible trapped the dissolved Cr in the Pb-17Li by the alloying process. The dissolution of Mo in the Pb-17Li was also promoted by the alloying with the dissolved Cr though the solubility of Mo in the Pb-17Li was quite low. The weight loss of the unalloyed W specimen exposed in the Pb-17Li was larger than that estimated from the solubility in the Pb-17Li. Some oxide particles were detected on the surface of the W specimen. The reasonable mechanism on the large weight loss of the W specimen was the formation and detachment of the oxide particles in the Pb-17Li.


Keywords

liquid blanket, Pb-17Li, corrosion, reduced activation ferritic martensitic steel, unalloyed metal

DOI: 10.1585/pfr.8.3405053


References

  • [1] H. Ono, R. Kasada and A. Kimura, J. Nucl. Mater. 329-333, 1117 (2004).
  • [2] M. Kondo et al., Fusion. Eng. Des. 87, 1777 (2012).
  • [3] M.G. Barker and T. Sample, Fusion Eng. Des. 14, 219 (1991).
  • [4] H. Feuerstein, H. Grabner, J. Oschinski and S. Horn, J. Nucl. Mater. 233-237, 1383 (1996).
  • [5] H. Glassbrenner et al., J. Nucl. Mater. 281, 225 (2000).
  • [6] B.A. Pint, J.L. Moser and P.F. Tortorelli, J. Nucl. Mater. 367-370, 1150 (2007).
  • [7] T. Nagasaka et al., Fusion Eng. Des. 85, 1261 (2010).
  • [8] Y. Li, T. Nagasaka, T. Muroga, A. Kimura and S. Ukai, Fusion Eng. Des. 86, 2495 (2011).
  • [9] Y. Li, M. Kondo, T. Nagasaka, T. Muroga and V. Tsisar, Fusion Sci. Technol. 60, 359 (2011).
  • [10] M. Kondo, M. Takahashi, S. Yoshida and N. Sawada, in Proceedings of International Conference of ICAPP04, Pittsburg, PA, June 13-17, p. 4044 (2004).
  • [11] N. Simon, A. Terlain and T. Flament, J. Nucl. Mater. 254, 185 (1998).
  • [12] H.U. Borgstedt and H. Feuerstein, J. Nucl. Mater. 191-194, 988 (1992).
  • [13] R. Kasada, Private communication (2012).
  • [14] M. Kondo, M. Takahashi, T. Suzuki, K. Ishikawa, K. Hata, S. Qiu and H. Sekimoto, J. Nucl. Mater. 343, 349 (2005).
  • [15] C. Schroer, J. Konys. T. Furukawa and K. Aoto, J. Nucl. Mater. 398, 109 (2010).
  • [16] B.A. Pint, J. Nucl. Mater. 417, 1195 (2011).
  • [17] Q. Xu, M. Kondo, T. Nagasaka, T. Muroga and O. Yeliseyeva, J. Nucl. Mater. 394, 20 (2009).
  • [18] M. Kondo, M. Takahashi, N. Sawada and K. Hata, J. Nucl. Sci. Technol. 43, 107 (2005).

This paper may be cited as follows:

Masatoshi KONDO and Takeo MUROGA, Plasma Fusion Res. 8, 3405053 (2013).