Journal of Materials Science

, Volume 24, Issue 7, pp 2348–2352 | Cite as

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

  • W. J. Tomlinson
  • N. J. Ayerst


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.


Polymer Grain Size Chromium Beneficial Effect Corrosion Resistance 


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Copyright information

© Chapman and Hall Ltd. 1989

Authors and Affiliations

  • W. J. Tomlinson
    • 1
  • N. J. Ayerst
    • 1
  1. 1.Department of MaterialsCoventry PolytechnicCoventryUK

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