Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8001541 | Journal of Alloys and Compounds | 2014 | 20 Pages |
Abstract
It is usually difficult to control the incorporation of foreign species in electrodeposited coatings originating from the solvent or the chemical species used for the electrodeposition bath. However, the presence of these impurities can modify their physicochemical properties. In the present study, complementary analytical techniques were used to evaluate the chemical contamination in nickel and nickel-tungsten alloys, electrodeposited from additive free baths. In order to better understand the relationship between impurity content and grain size refinement, the concentration of light elements (H, O and N) was systematically quantified by hot extraction analysis. Also, the distribution of contaminants was evaluated by SIMS analysis. We have shown that in nanocrystalline electrodeposited nickel the grain size refinement and the impurity contents are strongly related. However, in Ni-W alloys the evolution of the contamination is more complex, with a maximum amount for W contents around 10Â at.%.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
N. Shakibi Nia, J. Creus, X. Feaugas, C. Savall,