Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-23T11:11:18.290Z Has data issue: false hasContentIssue false
  • English
  • Français

Dilute Solution of H in bcc Ti35Cr65-xVx Alloys

Published online by Cambridge University Press:  01 February 2011

Giovanni Mazzolai
Giovanni Mazzolai*
Affiliation:
[email protected], University of Perugia, Department of Physics, Via A.Pascoli 5, Perugia, 06123, Italy
Get access

Abstract

The solubility of H in the solid solution phase of the Ti35Cr47V18 alloy has been investigated at high and low temperature. The Sieverts law has been found to hold for 808 K≤T≤1204 K and fail for 302 K≤T≤335 K. For H contents nH ≤0.07 (nH=H/Me) the partial molar enthalpy and partial non-configurational entropy at high temperature are:

On heating the material under H2 gas pressures lower than 0.1 MPa H absorption only occurs above 700 K. Below this temperature, surface oxide films prevent H uptake. Thermal decomposition spectroscopy of the α phase carried out for nH≤0.24 exhibits a single peak whose temperature increases with decreasing nH owing to selective occupancy by H of energetically non-degenerate interstitial sites.

Keywords

energy-storagealloyabsorption
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1042: Symposium S – Materials and Technology for Hydrogen Storage , 2007 , 1042-S03-26
Copyright
Copyright © Materials Research Society 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Akiba, E. and Iba, H., Intermetallics, 6, 461–70 (1998).Google Scholar
2. Cho, S. W., Han, C. S., Park, C. N. and Akiba, E., J. Alloys Compds. 288, 294–298 (1999).Google Scholar
3. Tamura, T., Kamegawa, A., Takamura, H. and Okada, M., Mater. Trans. 42 1862-65 (2001), ibid. 43, 2753-56 (2002).Google Scholar
4. Okada, M., Kuriiwa, T., Kamegawa, A. and Takamura, H., Materials Science and Eng. A329–331, 305–312,(2002).10.1016/S0921-5093(01)01580-5Google Scholar
5. Itoh, H., Arashima, H., Kubo, K. and Kabutomori, T., J. Alloys Compds. 330–332, 287–291 (2002).10.1016/S0925-8388(01)01530-4Google Scholar
6. Tamura, T., Kamegawa, A., Takamura, H. and Okada, M., Mater. Trans. 43, 410–413 (2002); T. Tamura, T. Kazumi, A. Kamegawa, H. Takamura and M. Okada, ibid. 43, 253-2756 (2002).Google Scholar
7. Okada, M., Kuriiwa, T., Tamura, T., Takamura, H. and Kamegawa, A., J. Alloys Compds. 330–332, 511–516 (2002).Google Scholar
8. Kazumi, T., Tamura, T., Kamegawa, A., Takamura, H., Mater. Trans. 43, 2748–2752 (2002); K. Shirasaki, T. Tamura, T. Kuriiwa, T. Goto, A. Kamegawa, H. Takamura and M. Okada, ibid., 43 1115-1119 (2002); A. Kamegawa, K. Shirasaki, T. Tamura, T. Kuriiwa, H. Takamura and M. Okada, ibid., 43 470-473 (2002).Google Scholar
9. Okada, M., Chou, T., Kamegawa, A., Tamura, T., Takamura, H., Matsukawa, A. and Yamashita, S., J. Alloys Compds. 356–357, 480–485 (2003); H. Arashima, F. Takahashi, T. Ebisawa, H. Itoh and T. Kabutomori, ibid., 356-357, 405-408 (2003); J. S. Cho, C. N. Park, J. H. Yoo, J. Choi, J. S. Park, C. Y. Suh and G. Shim, ibid., 403, 262-266 (2005); H. Itoh, H. Arashima, K. Kubo, T. Kabutomori and K. Ohnishi, ibid., 404-406, 417-420 (2005); G. Mazzolai, B. Coluzzi, A. Biscarini, F. M. Mazzolai, A. Tuissi F. Agresti, S. Lo Russo, A. Maddalena, P. Palade and G. Principi, ibid. Accepted.Google Scholar
10. Tanaka, S. and Flanagan, T. B., J. Less Common Metals 51, 79 (1977).10.1016/0022-5088(77)90176-XGoogle Scholar
11. Pebler, A. and Gulbransen, E. A., Trans. Met. Soc. AIME 239, 1593 (1967).Google Scholar
12. Lynch, J. F., Johnson, J. R. and Reilly, J. J., Z. Physik. Chem. N. F. 117, 753 (1979).10.1524/zpch.1979.117.117.229Google Scholar
13. Fukai, Y., The Metal –Hydrogen System, Basic bulk Properties, Springer-Verlag, 1992, Berlin, Heidelberg, New York, p. 8 and 31.Google Scholar
14. Switendick, A. C. Z. Phys. Chem. N. F. 117, 80 (1979).Google Scholar
15. Biscarini, A., Coluzzi, B. and Mazzolai, F. M., Defects and Diffusion Forum, 165–166, 1(1999)Google Scholar