The influence of Mn and heating conditions on intergranular corrosion susceptibility after brazing of Al-Mn alloys was investigated. Intergranular corrosion susceptibility of Al-Mn alloys is intensified when Mn exceeds 0.3%. A new material, HE alloy, was also studied. The HE alloys contain 0.4 to 0.5% Cu and 0 to 0.3% Mn as main elements. HE alloys are free from intergranular corrosion and are protected from corrosion cathodically by fin material (3003 alloy) and filler (4004 alloy), because HE alloys have greater noble electrochemical potential.


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    Title :

    Corrosion properties of new aluminum alloys for brazing heat exchangers


    Additional title:

    Korrosionseigenschaften von neuen Aluminiumlegierungen zum Loeten von Waermetauschern


    Contributors:
    Toyose, K. (author) / Takigawa, J. (author) / Takemoto, M. (author)

    Published in:

    Publication date :

    1988


    Size :

    6 Seiten, 1 Bild, 5 Tabellen, 2 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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