Protecting zinc using cerium based mixed oxides

S. Thomas, M.S. Venkatraman, N. Birbilis, I.S. Cole

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

Abstract

Zinc oxides can support the oxygen reduction reaction at high rates, hence surface oxides formed over zinc provide ineffective protection against corrosion once corrosion has commenced. A solution to this issue is to form a mixed layer of oxides over zinc. In line with approach, mixed oxides have been systematically developed using zinc and cerium oxides and then tested using potentiodynamic polarisation. The work addresses some of existing issues with respect to using cerium inhibition systems, namely the extent of immersion and presence of an optimum cerium concentration for maximum inhibition. It also outlines some of the problems that need to be modelled to design a corrosion resistant mixed oxide. It is evident that the presence of ZnO nuclei over zinc surface favours the growth of well-defined, dense cerium oxides. This particular aspect needs to be subject to further study in designing corrosion resistant zinc based mixed oxides.

Original languageEnglish
Title of host publication18th International Corrosion Congress 2011
Subtitle of host publication20-24 November 2011; Perth, Australia
PublisherAustralasian Corrosion Association
Pages1365-1375
Number of pages11
Volume2
ISBN (Print)9781618393630
Publication statusPublished - 2011
EventInternational Corrosion Congress 2011 - Perth Convention and Exhibition Centre, Perth, Australia
Duration: 20 Nov 201124 Nov 2011
Conference number: 18th

Conference

ConferenceInternational Corrosion Congress 2011
Abbreviated titleICC 2011
CountryAustralia
CityPerth
Period20/11/1124/11/11
OtherThe 18th International Corrosion Congress took place between the 20th and the 24th November 2011 in the Perth Convention and Exhibition Centre, Australia. The International Corrosion Congress is the major event of the International Corrosion Council (ICC), an international body founded to advance corrosion science and engineering and is held once every three years by different host countries.

Keywords

  • Cerium
  • Inhibition
  • Oxide
  • Zinc

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