Suitability of aluminium alloy AA5083 in marine environments

Krishnan Kannoorpatti, Hemangi Surti

    Research output: Chapter in Book/Report/Conference proceedingConference Paper published in Proceedings

    Abstract

    Aluminium alloys are being increasingly utilised in marine environments. Their excellent corrosion resistance combined with an excellent weight to strength ratio makes them highly attractive for structural applications. Aluminium alloy 5083 is an attractive material for marine applications. These alloys produce very low corrosion rates in marine water. However, they are prone to pitting when there is insufficient oxidiser or oxygen. Anodising has been found to reduce pitting damage but this requires maintenance every 9 months. Cathodic or anodic protection, as per AS2832.3- 2005, will provide good protection against general, pitting and crevice corrosion. Painting aluminium structures has been found to be not very beneficial to corrosion resistance unless it has sufficient thickness and maintained regularly. Structures for marine environments need to be modular in construction and be easily replaceable if there is a need.
    Original languageEnglish
    Title of host publicationProceedings of the Annual Conference of the Australasian Corrosion Association 2012
    Place of PublicationVictoria
    PublisherAustralasian Corrosion Association
    Pages982-990
    Number of pages9
    Publication statusPublished - 2012
    EventAnnual Conference of the Australasian Corrosion Association (ACA 2012): Corrosion and Prevention - Melbourne, Melbourne, Australia
    Duration: 11 Nov 201214 Nov 2012
    Conference number: 2012

    Conference

    ConferenceAnnual Conference of the Australasian Corrosion Association (ACA 2012)
    Abbreviated titleACA
    CountryAustralia
    CityMelbourne
    Period11/11/1214/11/12

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  • Cite this

    Kannoorpatti, K., & Surti, H. (2012). Suitability of aluminium alloy AA5083 in marine environments. In Proceedings of the Annual Conference of the Australasian Corrosion Association 2012 (pp. 982-990). Australasian Corrosion Association.