Corrosion Studies on Metal Matrix Composites

  • S. Coleman
  • B. McEnaney
  • V. Scott

Abstract

A double cycle polarization technique is described which provides important corrosion parameters such as pitting potential and protection potential. The parameters are assessed by comparison with open circuit potentials and gravimetric studies from longer term immersion tests. Corrosion in de-aerated NaCl solution of aluminium alloys reinforced with alumina, silicon carbide and carbon is studied. Second phases, often at the fibre-matrix interface, generally result in preferential attack. This dominates the corrosion behaviour of the composite with reinforcements playing a secondary role, for example, by acting as relatively inert physical barriers to corrosion pit propagation or by modifying matrix microstructure.

Keywords

Carbon Fibre Open Circuit Potential Protection Potential Aluminium Carbide Preferential Attack 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Smialowska, Z.S. and Czachor, M.J., British Corr. J., 4, (1969) 138–145.Google Scholar
  2. 2.
    Clyne T.W., Bader M.G., Cappleman G.R. and Hubert P.A., J. Mat. Sci, 20 (1985) 85–96.CrossRefGoogle Scholar
  3. 3.
    Ming Yang and Scott V.D., J. Mat. Sci., (1990) in press.Google Scholar

Copyright information

© Elsevier Science Publishers Ltd 1990

Authors and Affiliations

  • S. Coleman
    • 1
  • B. McEnaney
    • 1
  • V. Scott
    • 1
  1. 1.School of Materials ScienceUniversity of BathBathGreat Britain

Personalised recommendations