Electrodeposition of Copper and Brass Coatings with Olive-Like Structure

Materials

Natalia Łatanik¹  Artur Maciej¹  Wojciech Simka¹  Maciej Sowa¹  Izabela Matuła² 

[1] Department of Inorganic Chemistry, Analytical Chemistry and Electrochemistry, Faculty of Chemistry, Silesian University of Technology, B. Krzywoustego Str. 6, 44-100 Gliwice, Poland;Faculty of Science and Technology, Institute of Materials Engineering, University of Silesia in Katowice, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland;

关键词: brass coating;    Cu-Zn alloy coating;    electrodeposition;    non-cyanide bath;    ionic liquids;    1-ethyl-3-methylimidazolium acetate;   

DOI  :  10.3390/ma14071762

来源: DOAJ

【 摘 要 】

One method of creating a brass coating is through electrodeposition, which is most often completed in cyanide galvanic baths. Due to their toxicity, many investigations focused on the development of more environmentally friendly alternatives. The purpose of the study was to explore a new generation of non-aqueous cyanide-free baths based on 1-ethyl-3-methylimidazolium acetate ionic liquids. The study involved the formation of copper, zinc, and brass coatings. The influence of the bath composition, cathodic current density, and temperature was determined. The obtained coatings were characterized in terms of their morphology, chemical composition, phase composition, roughness, and corrosion resistance. It was found that the structure of the obtained coatings is strongly dependent on the process parameters. The three main structure types observed were as follows: fine-grained, porous, and olive-like. To the best knowledge of the authors, it is the first time the olive-like structure was observed in the case of an electrodeposited coating. The Cu-Zn coatings consisted of 19–96 at. % copper and exhibited relatively good corrosion resistance. A significant improvement of corrosion properties was found in the case of copper and brass coatings with the olive-like structure.

【 授权许可】

Unknown