Role of acidic chemistries in steam treatment of aluminium alloys

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    The effect of acidic chemistry on the accelerated growth of oxide on aluminium alloys Peraluman 706TM and AA6060 under exposure to high temperature steam was investigated. Studied chemistries were based on citrates and phosphates. Results showed that the presence of citrate and phosphate anions initiate doxide growth at the intermetallic particles while growth and corrosion performance of oxide was found tobe a function of anions type and their concentration. Further, steam treatment with phosphates exhibited better performance under acetic acid salt spray and filiform corrosion test whereas delay in powder coating resulted in 1.5–3 times inferior performance.
    Original languageEnglish
    JournalCorrosion Science
    Pages (from-to)258-271
    Publication statusPublished - 2015


    • A. Aluminium
    • A. Intermetallics
    • B. Polarization
    • B. SEM
    • C. Oxidation
    • C. Passive filmsa


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