Electrodeposition of yellow bronze from acidic sulfate baths containing polyether laprol and micromolar additives of halides |
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Authors: | Z Mockus S Kanapeckaité V Jasulaitiené and A Survila |
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Affiliation: | (1) Institute of Chemistry, G?stauto 9, Vilnius, LT01108, Lithuania |
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Abstract: | The composition of yellow bronze coatings deposited from acidic sulfate solutions added with polyether laprol and the electrodeposition
conditions are studied by voltammetry and XPS. It is found that halides in rather low (micromolar) concentrations affect significantly
the partial electrodeposition processes. Chlorides increases cathodic polarization, widen the current window of the yellow
bronze electrodeposition, and favor the increase in tin content of the coatings. Bromides narrow the current window, lower
the tin content in the coatings, and hinder the yellow bronze surface oxidation. Iodides inhibit the copper electroreduction
markedly, which makes the yellow bronze deposition practically impossible.
Original Russian Text ? Z. Mockus, S. Kanapeckaité, V. Jasulaitiené, A. Survila, 2006, published in Zashchita Metallov, 2006,
Vol. 42, No. 5, pp. 526–531. |
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