Long term outdoor exposure testing of various zinc-nickel plated products has indicated that better underfilm creep resistance is obtained when a nickel strike deposit is plated on the steel surface prior to plating the zinc-nickel alloy. These data are compared to other corrosion resistant coatings. Corrosion evaluation by short term Cyclic Corrosion or scab testing is also discussed.The adhesion of the various electroplated surfaces has also been investigated. It has been found that the presence of the nickel strike deposit improves the adhesion characteristic of this electroplated zinc-nickel alloy as demonstrated by the fact that the location of failure moves from an adhesive delamination of the electroplated alloy to a cohesive failure in the structural adhesive. The movement of the failure site appears to correlate with the improvement of the underfiim creep values in the Volvo test.


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    Title :

    Advantages of a Nickel Strike Prior to Electrodeposition of the Nickel Zinc Alloy Layer on Steel for Automotive Applications


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    1989 SAE Automotive Corrosion and Prevention Conference and Exposition ; 1989



    Publication date :

    1989-12-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Advantages of a nickel strike prior to electrodeposition of the nickel zinc alloy layer on steel for automotive applications

    Klippel,W.C. / Hamilton,C.B. / Thomas Steel Strip,US | Automotive engineering | 1989


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