Cobalt-based alloys for orthopaedic applications studied by electrochemical and XPS analysis

  • Aleksandra Kocijan
  • Ingrid Milošev
  • Boris Pihlar
Article

Abstract

The composition of the passive layers formed by electrochemical oxidation at different passivation potentials on Co–Cr–Mo and Co–Ni–Cr–Mo alloys in simulated physiological solution (SPS), with and without the complexing agent EDTA, was studied by X-ray photoelectron spectroscopy. Composition as a function of depth, cationic fraction and thickness of the passive film was determined. Chromium oxide is shown to be the major constituent of the passive layer on both Co–Cr–Mo and Co–Ni–Cr–Mo alloys. The minor constituents of the passive layers, Co- and Mo-oxide in the case of Co–Cr–Mo alloy and Ni-, Co- and Mo-oxides in the case of Co–Ni–Cr–Mo alloy, are also located in the outer part of the layer. EDTA affects the formation of the passive layer on each alloy. The content of Co-, Ni- and Mo-oxide in the passive layer is lower in the presence of EDTA, thus indicating increased solubility associated with higher stability constants for complexes of metal cations with EDTA.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    H. B. Skinner, in “Current Diagnosis and Treatment in Orthopedics” (Norwalk, Connecticut, Appleton and Lange, 1995) p. 19.Google Scholar
  2. 2.
    H. G. Willert, G. H. Buchhorn and M. Semlitsch, in “Biological Material, and Mechanical Considerations of Joint Replacement” (Raven Press, New York, 1988) p. 129.Google Scholar
  3. 3.
    R. M. Urban, J. J. Jacobs, M. J. Tomlinson, J. Gavrilovic, J. Black and M. Peoch, J. Bone Joint Surg. 82 (2000) 457.Google Scholar
  4. 4.
    N. Hallab, K. Merrit and J. J. Jacobs, ibid. 83A (2001) 428.Google Scholar
  5. 5.
    J. J. Jacobs, A. Skipor, P. Doorn, P. Campbell, T. P. Schmalzried, J. Black and H. C. Amstutz, Clin. Orthop. Rel. Res. 329S (1996) 256.Google Scholar
  6. 6.
    W. Brodner, P. Bitzan, V. Meisinger, A. Kaider, F. Gottsauner-Wolf and R. Kotz, J. Bone Joint Surg. 78B (1997) 316.Google Scholar
  7. 7.
    T. Hanawa, S. Hiromoto and K. Asami, Appl. Surface Sci. 183 (2001) 68.Google Scholar
  8. 8.
    R. L. Moore, G. L. Grobe III and J. A. Gardella, J. Vac. Sci. Technol. A9 (1991) 1323.Google Scholar
  9. 9.
    C. Maffiotte, M. Navas, M. L. Castaňo and A. M. Lancha, Surf. Interface Anal. 30 (2000) 161.Google Scholar
  10. 10.
    G. Larramona and C. Guetierrez, J. Electroanal. Chem. 293 (1990) 237.Google Scholar
  11. 11.
    A. Bewick, C. Guetierrez and G. Larramona, ibid. 333 (1992) 165.Google Scholar
  12. 12.
    Y. S. Li, K. Wang, P. He, B. X. Huang and P. Kovacs, J. Raman Spectrosc. 30 (1999) 91.Google Scholar
  13. 13.
    Annual Book of ASTM Standards, “Medical Devices”, vol. 13.01 (Philadelphia, ASTM, 1988).Google Scholar
  14. 14.
    S. Hoffman, in “Practical Surface Analysis” (Wiley and Sons, Chichester, 1990) p. 141.Google Scholar
  15. 15.
    M. Wolff, Ph.D. thesis, Heinrich-Heine University, Düsseldorf, Germany, 1992.Google Scholar
  16. 16.
    I. Milošev and H.-H. Strehblow, Electrochim Acta 48 (2003) 2767.Google Scholar
  17. 17.
    A. Foelske and H.-H. Strehblow, Surf. Interface Anal. 29 (2000) 548.Google Scholar
  18. 18.
    J. H. Scofield, J. Electron Spectrosc. Relat. Phenom. 8 (1976) 129.Google Scholar
  19. 19.
    R. F. Reilman, A. Msezane and S. T. Manson, J. Electron Spectrosc. Relat. Phenom. 8 (1976) 389.Google Scholar
  20. 20.
    W. H. Hocking, F. W. Stanchell, E. Mcalpine and D. H. Lister, Corros. Sci. 25 (1985) 531.Google Scholar
  21. 21.
    N. S. Mcintyre, D. G. Zetaruk and E. V. Murphy, Surf. Interface Anal. 1 (1979) 105.Google Scholar
  22. 22.
    I. Milošev, J. Appl. Electrochem. 32 (2002) 311.Google Scholar
  23. 23.
    R. M. Smith and A. E. Martell, in “Critical Stability Constants”, vol. 3 (New York/London, Plenum Press, 1977).Google Scholar
  24. 24.
    A. Kocijan, I. Milošev and B. Pihlar, J. Mater. Sci.: Mater. Med. 14 (2003) 69.Google Scholar

Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • Aleksandra Kocijan
    • 1
  • Ingrid Milošev
    • 1
    • 2
  • Boris Pihlar
    • 3
  1. 1.Department of Physical and Organic ChemistryJožef Stefan InstituteLjubljanaSlovenia
  2. 2.Valdoltra Orthopaedic HospitalAnkaranSlovenia
  3. 3.Faculty of Chemistry and Chemical TechnologyLjubljanaSlovenia

Personalised recommendations