Plasma and Fusion Research

Volume 11, 2405076 (2016)

Regular Articles

Experimental Study on Chemical Behaviors of Non-Metal Impurities in Pb, Pb-Bi and Pb-Li by Temperature Programmed Desorption Mass Spectrometer Analysis
Masatoshi KONDO, Yuu NAKAJIMA1), Teruya TANAKA2), Takashi NOZAWA3) and Takehiko YOKOMINE4)
Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8550, Japan
1)
Tokai University, 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa 259-1292, Japan
2)
National Institute for Fusion Science, Toki, Gifu 502-5292, Japan
3)
National Institute for Quantum and Radiological Science and Technology, 2-166 Omotedate, Obuchi, Rokkasho, Aomori 039-3212, Japan
4)
Kyoto University, Kyotodaigaku-Katsura, Kyoto 615-8540, Japan
(Received 22 November 2015 / Accepted 1 April 2016 / Published 13 July 2016)

Abstract

The chemical behaviors of non-metal impurities such as O2, H2, N2, H2O, CO2 and CO in lead (Pb) metal, lead-bismuth (Pb-Bi) alloy and lead-lithium (Pb-Li) alloys were experimentally investigated by means of temperature programmed desorption mass spectrometer (TPD-MS) analysis. Desorption of H2O and CO2 from the Pb metal and the Pb-Bi alloy was clearly detected by TPD-MS analysis. However, desorption of H2O and CO2 from the Pb-Li alloys was much less than that from the Pb metal and the Pb-Bi alloy, since these molecules are chemically unstable and react with Li in the Pb-Li alloys. Then, oxygen and hydrogen must be dissolved in Pb-Li alloys as they form the chemical compounds of Li (i.e., Li2O, LiOH and LiH). Large desorption of hydrogen from solid Pb-Li alloys by their heating was detected. The possible mechanism for the large desorption of hydrogen from the Pb-Li alloys is based on the decomposition of LiH and Pb-Li-H at high temperature. The chemical behaviors of the non-metal impurities in the Pb-Li alloys was modeled based on the thermodynamic stability. The methodologies for the fabrication of high-purity Pb-Li alloys and the control of the impurity condition are discussed.

Keywords

liquid blanket, liquid breeder, liquid metal, non-metal impurity, temperature programmed desorption mass spectrometer

DOI: 10.1585/pfr.11.2405076

Full Text

PDF format (2.2Mbytes) PDF Download

References

  • [1] M. Kondo, M. Takahashi, T. Teruya, V. Tsisar and T. Muroga, Fusion Eng. Des. 87, 1777 (2012).
  • [2] M. Kondo and T. Muroga, Plasma Fusion Res. 8, 3405053 (2013).
  • [3] M. Kondo, T. Oshima, M. Tanaka, T. Muroga and A. Sagara, Fusion Eng. Des. 87, 1788 (2012).
  • [4] S. Fukada, T. Muneoka, M. Kinjyo, R. Yoshimura and K. Katayama, Fusion Eng. Des. 96-97, 95 (2015).
  • [5] Q. Xu, M. Kondo, T. Nagasaka, T. Muroga and O. Yeliseyeva, J. Nucl. Mater. 394, 20 (2009).
  • [6] V. Tsisar, M. Kondo, Q. Xu, T. Muroga, T. Nagasaka and O. Yeliseyeva, J. Nucl. Mater. 417, 1205 (2011).
  • [7] M. Kondo, M. Takahashi, T. Suzuki, K. Ishikawa, K. Hata, S. Qiu and H. Sekimoto, J. Nucl. Mater. 343, 349 (2005).
  • [8] M. Kondo, M. Takahashi, N. Sawada and K. Hata, J. Nucl. Sci. Technol. 43, 107 (2005).
  • [9] M. Kondo, M. Takahashi, K. Miura and T. Onizawa, J. Nucl. Mater. 357, 97 (2006).
  • [10] Handbook on Lead-bismuth Eutectic Alloy and Lead Properties, Materials Compatibility, Thermal-hydraulics and Technologies (2007 edition), OECD-NEA, (https://www.oecd-nea.org/science/reports/2007/nea6195-handbook.html)
  • [11] G. Alberro, I. Penalva, A. Sarrionandia-Ibarra, F. Legarda and G.A. Esteban, Fusion Eng. Des. 98-99, 1919 (2015).
  • [12] Y. Nakajima, M. Kondo and T. Nozawa, Fusion Eng. Des. 98-99, 2009 (2015).
  • [13] M. Kondo, Y. Nakajima, M. Tsuji and T. Nozawa, Fusion Eng. Des., inpress (2016). doi:10.1016/j.fusengdes.2015.12.029
  • [14] M. Kondo and Y. Nakajima, Fusion Eng. Des. 88, 2556 (2013).
  • [15] T. Sakabe, T. Yokomine, T. Kunugi, Z. Kawara, Y. Ueki and T. Tanaka, Fusion Eng. Des. 89, 1417 (2014).
  • [16] G. Ran, C. Xiao, X. Chen, Y. Gong, C. Kang and X. Wang, J. Nucl. Mater. 466, 316 (2015).
  • [17] P. Hubberstey and T. Sample, J. Nucl. Mater. 191-194, 283 (1992).
  • [18] P. Hubberstey and T. Sample, J. Nucl. Mater. 199, 149 (1993).
  • [19] Thermodynamic database MALT group. Thermodynamic database MALT for Windows. Kagaku Gijutsu-Sha.2005. (CD-ROM), available from http://www.kagaku.com/malt/index.html (accessed 2016-03-29).
  • [20] T. Asada, S. Kano, Y. Tachi and M. Kawai, “Properties of Lithium and its handling” , JNC TN9410, 2000-013 (2000) (in Japanese).
  • [21] M. Kondo, T. Oshima, M. Tanaka, T. Muroga and A. Sagara, Fusion Eng. Des. 87, 1788 (2012).