Journal of Applied Electrochemistry

, Volume 34, Issue 11, pp 1085–1091 | Cite as

Characterisation of electrodeposited nanocrystalline Ni–Mo alloys

  • Elisabeth Chassaing
  • Nicolas Portail
  • Anne-france Levy
  • Guillaume Wang


Ni–Mo nanocrystalline layers were electrodeposited using direct current from citrate–ammonia solutions. The quartz crystal microbalance investigation confirms that the discharge process starts with hydrogen evolution before the onset of the alloy deposition. The grain size was estimated from X-ray line broadening. It decreases when the molybdenum content is increased. It is smaller for layers deposited at pH 9.5 than 8.5. The microhardness exhibits a maximum close to 800 Vickers for τMo around 17 wt%. For higher τMo a softening is observed showing a deviation from Hall-Petch behaviour due to small grain size. In deaerated hydrochloric solutions, the layers show a large passivation domain without any pitting. The corrosion currents as well as the passivation currents, higher than for the bulk Hastelloy B alloy, decrease when τMo is increased.

electrodeposition EQCM Ni–Mo nanocrystalline alloys 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    C. Suryanarayana, Int. Mat. Rev. 40 (1995) 41 and references therein.Google Scholar
  2. 2.
    U. Erb, A.M. El-Sherik, G. Palumbo and K.T. Aust, Nanostruct. Mater. 2 (1993) 383.Google Scholar
  3. 3.
    E. Chassaing, M.P. Roumegas and M.F. Trichet, J. Appl. Electrochem. 25 (1995) 667.Google Scholar
  4. 4.
    E.J. Podlaha, M. Matlosz and D. Landolt, J. Electrochem.Soc. 140 (1993) L149.Google Scholar
  5. 5.
    S. Rengakuji, Y. Nakamura, N. Sumi, K. Nishibe and T. Komura, Denki Kagaku 63 (1995) 400.Google Scholar
  6. 6.
    Y. Zeng, Z. Li, M. Ma, S. Zhou, Electrochem. Comm. 2 (2000) 36.Google Scholar
  7. 7.
    L.S. Sanches, S.H. Domingues, A. Carubelli and L.H. Mascaro, J. Brazilian Chem. Soc. 14 (2003) 556.Google Scholar
  8. 8.
    W.Z. Friend, in Corrosion of Nickel and Nickel-base Alloys (Wiley-Interscience publication, New York, 1980), p. 248.Google Scholar
  9. 9.
    C.L. Fan, D.L. Piron, A. Sleb and P. Paradis, J. Electrochem. Soc. 141 (1994) 382.Google Scholar
  10. 10.
    Y.C. Chang, K.C. Fan and C.I. Lin, J. Chin. Inst. Chem. Eng. 33 (2002) 499.Google Scholar
  11. 11.
    T.Sato, H. Takahashi, E. Matsubara and A. Muramatsu, Mat. Trans. 43 (2002) 1525.Google Scholar
  12. 12.
    A. Brenner, in Electrodeposition of Alloys, Vol. II Academic Press, 1963, pp. 347–408.Google Scholar
  13. 13.
    E.Chassaing, K. Vu Quang and R. Wiart, J. Appl. Electrochem. 19 (1989) 839.Google Scholar
  14. 14.
    S. Rengakuji, Y. Nakamura, K. Nishibe, M. Inoue and T. Komura, Denki Kagaku 62 (1994) 602.Google Scholar
  15. 15.
    E.J. Podlaha and D. Landolt, J. Eectrochem. Soc. 144 (1997) 1672.Google Scholar
  16. 16.
    E.Gomez, E. Pellicer and E. Valles, J. Appl. Electrochem. 33 (2003) 245.Google Scholar
  17. 17.
    C. Suryanarayana and C.C. Koch, Hyperfine Interact. 130 (2000) 5.Google Scholar
  18. 18.
    W.B. Pearson, A Handbook of Lattice Spacings and Structures of Metals and Alloys, Vol. 2 (Pergamon Press, 1967).Google Scholar
  19. 19.
    T. Yamasaki, P. Schlossmacher, K. Ehrlich and Y. Ogino, Nanostruct. Mater. 10 (1998) 375.Google Scholar
  20. 20.
    T.Yamasaki, R. Tomohira, Y. Ogino, P. Schlossmacher and K. Ehrlich, Plating Surf. Finish. 87 (2000) 148.Google Scholar
  21. 21.
    G. Palumbo, S.J. Thorpe and K.T. Aust, Scri. Met. et Mat. 24 (1990) 1347.Google Scholar
  22. 22.
    R. Rofagha, R. Langer, A. M. El-Sherik, U. Erb, G.Palumbo and K.T. Aust, Scri. Met. et Mater. 25 (1991) 2867.Google Scholar
  23. 23.
    R. Rofagha, U. Erb, D. Ostrander, G. Palumbo and K.T. Aust, Nanostruct. Mater. 2 (1993) 1.Google Scholar
  24. 24.
    R. Rofagha, S.J. Splinter, U. Erb and N.S. McIntyre, Nanostruct. Mater. 4 (1994) 69.Google Scholar

Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • Elisabeth Chassaing
    • 1
  • Nicolas Portail
    • 1
  • Anne-france Levy
    • 1
  • Guillaume Wang
    • 1
  1. 1.Centre d' Etudes de Chimie Métallurgique-CNRSFrance

Personalised recommendations