Skip to main content
SpringerLink
Log in

Cathodic modification as a means of improving the corrosion resistance of alloys

  • Reviews of Applied Electrochemistry 24
  • Published:
Journal of Applied Electrochemistry Aims and scope Submit manuscript

Abstract

Cathodic modification is defined and its origin is discussed. The criteria necessary for cathodic modification are listed for the base alloy as well as the cathodic alloying component, and the principle of cathodic modification is treated in detail. The mechanism of cathodic modification is also described extensively. Various mechanisms that account for the redistribution of alloying elements on the corroded surface are compared and discussed, and the most likely one is pointed out. It is concluded that cathodic modification is a very powerful electrochemical means of improving the corrosion resistance of alloys, particularly of stainless steels and titanium-based alloys in non-oxidizing acid media.

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

Abbreviations

i p :

Passive current density

i cr :

Critical current density

i co :

Corrosion current density

i cath :

Current density of cathodic process

i tr :

Transpassive current density

E co :

Corrosion potential

E p :

Passivation potential

E AO :

Anodic potential of base metal or alloy

E CO :

Potential of cathodic component

E tr :

Transpassive potential

References

  1. N. D. Tomashov,Prot. Met. 3 (1967) 3;22 (1986) 679.

    Google Scholar 

  2. ,Corrosion 14 (1958) 229.

    Google Scholar 

  3. P. Monnartz,Metallurgie 8 (1911) 161.

    Google Scholar 

  4. N. D. Tomashov, G. P. Sinelschtschikova and M. A. Vedineeva,Ber. Akad. d. Wissenschaft (Moscow 1962) Bd I (1948) 105.

    Google Scholar 

  5. M. Stern,J. Electrochem. Soc. 105 (1958) 638.

    Google Scholar 

  6. M. Stern and H. Wissenberg,J. Electrochem. Soc. 106 (1959) 751, 759.

    Google Scholar 

  7. M. Stern and C. R. Bishop,Prepr. Amer. Soc. Metals 51 (1959) 165;ASM 52 (1960) 239.

    Google Scholar 

  8. Idem M. Stern and C. R. Bishop,Trans. ASM 54 (1961) March. June, September, December,passim.

  9. N. D. Greene, C. R. Bishop and M. Stern,J. Electrochem. Soc. 108 (1961) 836.

    Google Scholar 

  10. J. B. Cotton,Chem. and Ind. 68-9 (1958) 492;Werkstoffe und Korrosion 1 (1960) 152.

    Google Scholar 

  11. Chem. Eng. 67 (1960) 166;Chem. Eng. 10 (1959) 200.

    Google Scholar 

  12. Idem, J. B. Cotton, Ber. III. Int. Congr. Metallic Corr. Moscow (1966) p. 54.

  13. J. O'M Bockris, N. Bonciocat and F. Guthmann, ‘An Introduction to Electrochemical Science’, Sykeham Publisher, London (1974) p. 72.

    Google Scholar 

  14. M. A. Streicher,Platinum Metals Review 21 (1977) 51.

    Google Scholar 

  15. A. Higginson, Mintek Private Communication (1984).

  16. N. D. Tomashov,Prot. Met. 17 (1981) 11.

    Google Scholar 

  17. A. Higginson, Ph.D Thesis, University of Manchester, Manchester, U.K. (1987) 67–8.

  18. A. B. Forty and J. A. Durkin,Philosophical Magazine 42 (1980) 295.

    Google Scholar 

  19. H. W. Pickering,Corrosion Science 23 (1983) 1107.

    Google Scholar 

  20. N. D. Tomashov, G. P. Chernova, L. N. Volkov, A. P. Yakhanov and Y. E. Sheshenina,Prot. Met. 9 (1973) 289.

    Google Scholar 

  21. N. D. Tomashov, G. P. Chernova, E. N. Ustinskii, A. E. Chalykh, M. I. Ilin, V. V. Matveev and A. E. Rubtsov,Prot. Met. 20 (1984) 158.

    Google Scholar 

  22. B. Brox and I. Olejford,Proc. Stainless Steel '84 Conf., Institute of Metals, London (1985) 134.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Physical Metallurgy Division of the Council of Mineral Technology, Private Bag X 3015, 2125, Randburg, South Africa

    J. H. Potgieter

  2. Department of Chemistry, University of Pretoria, 0001, Pretoria, South Africa

    A. M. Heyns

  3. Department of Chemical Engineering, University of Pretoria, 0001, Pretoria, South Africa

    W. Skinner

Authors
  1. J. H. Potgieter
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. A. M. Heyns
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. W. Skinner
    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

Potgieter, J.H., Heyns, A.M. & Skinner, W. Cathodic modification as a means of improving the corrosion resistance of alloys. J Appl Electrochem 20, 711–715 (1990). https://doi.org/10.1007/BF01094295

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01094295

Keywords

Search

Navigation