1989-12-01

Advantages of a Nickel Strike Prior to Electrodeposition of the Nickel Zinc Alloy Layer on Steel for Automotive Applications 892562

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.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: Purchase more aerospace standards and aerospace material specifications and save! AeroPaks off a customized subscription plan that lets you pay for just the documents that you need, when you need them.
X