| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8029883 | Surface and Coatings Technology | 2013 | 8 Pages |
Abstract
In order to develop the new bath solutions with long cycles and high stability for electroless nickel (EN) plating of magnesium alloys, effect of bath pH and pH stabilizers on plating rate and coating quality as well as bath life were studied in detail. Gravimetry was used to determine the deposition rate of coating. The coverage of coating was evaluated by 2Â h of immersion test for magnesium alloys in 3.5Â wt.% NaCl solution. The results showed that the bath pH not only changed the reactivity of the bath, but also had a strong impact on the microstructure and electrochemical properties of coatings. A highly uniform and dense coating was formed via EN plating in the new bath containing ammonium acetate. The bath life was extended when appropriate amount of ammonium acetate was added. It was effective for ammonium acetate to stabilize pH in the plating solution, to control coating quality and bath life.
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Authors
Bonian Hu, Ruixue Sun, Gang Yu, Lingsong Liu, Zhihui Xie, Xiaomei He, Xueyuan Zhang,