Skip to main content
SpringerLink
Log in

Anodic polarization and corrosion of WC-Co hardmetals containing small amounts of Cr3C2 and/or VC

  • Published:
Journal of Materials Science Aims and scope Submit manuscript

Abstract

The anodic polarization and corrosion properties of commercial WC-Co hardmetals with different grain sizes and containing small amounts of Cr3C2 and/or VC in acid (pH 2.8), acid/3% NaCl, and neutral 3% NaCl solutions, have been measured using potentiokinetic and linear polarization conductance techniques. An increase in grain size increased the passive current density. Small additions of Cr3C2 increased substantially the corrosion resistance. Small additions of VC had little effect on the corrosion resistance, but in the presence of small additions of Cr3C2 it reduced the beneficial effects of chromium.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. E. A. Almond,Mater. Design 7 (1986) 324.

    Google Scholar 

  2. Idem, Powder Metall. 25 (1982) 146.

    Google Scholar 

  3. S. Ekemar, L. Lindholm andT. Hartzell,Refractory and Hard Metals 1 (1982) 37.

    Google Scholar 

  4. E. Kny andL. Schmid,ibid. 6 (1987) 145.

    Google Scholar 

  5. M. H. Ghandehar,J. Electrochem. Soc. 127 (1980) 214.

    Google Scholar 

  6. J. B. Fink, S. A. Hoering andJ. L. Griffith,Wear 108 (1986) 97.

    Google Scholar 

  7. G. D. Mohan andB. E. Klamechi,ibid. 74 (1981) 85.

    Google Scholar 

  8. E. Mosher, L. Peterson andR. Skold,Mater. Perf. 25 (1987) 38.

    Google Scholar 

  9. M. G. Fontana, “Corrosion Engineering”, 3rd Edn (McGraw-Hill, New York, 1986) p. 502.

    Google Scholar 

  10. W. J. Tomlinson andC. R. Linzell,J. Mater. Sci. 23 (1988) 914.

    Google Scholar 

  11. R. D. Armstrong, A. E. Douglas andD. E. Keene,J. Electrochem. Soc. 118 (1971) 568.

    Google Scholar 

  12. J. M. West, “Basic corrosion and oxidation”, 2nd Edn (Ellis Horwood, Chichester, 1986) p. 85.

    Google Scholar 

  13. H. E. Exner,Int. Met. Rev. 4 (1979) 149.

    Google Scholar 

  14. T. Ohtsuka andN. Sato,J. Electrochem. Soc. 128 (1981) 2522.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Materials, Coventry Polytechnic, CV1 5FB, Coventry, UK

    W. J. Tomlinson & N. J. Ayerst

Authors
  1. W. J. Tomlinson
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. N. J. Ayerst
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Tomlinson, W.J., Ayerst, N.J. Anodic polarization and corrosion of WC-Co hardmetals containing small amounts of Cr3C2 and/or VC. J Mater Sci 24, 2348–2352 (1989). https://doi.org/10.1007/BF01174495

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01174495

Keywords

Search

Navigation