Pattern formation during electrodeposition of copper-antimony alloys

  • Vasil S. Kostov Institute of Physical Chemistry, Bulgarian Academy of Sciences, Sofia 1113
  • Ivan N. Krastev Institute of Physical Chemistry, Bulgarian Academy of Sciences, Sofia 1113
  • Tsvetina Venkova Dobrovolska Institute of Physical Chemistry, Bulgarian Academy of Sciences, Sofia 1113
Keywords: Electrodeposited alloy, Copper-antimony, Self-organization phenomena

Abstract

Aim of the present study is to establish the conditions of the electrolysis for the preparation of structured and unstressed purple-pink coatings of copper-antimony alloys, including their phase characterization. Also the task of the present investigation is, by changing drastically the metal content in the methanesulfonic electrolyte to find out the conditions of electrolysis where the self-organization of the different phases is expressed by higher-order structures - not only waves but also spirals and targets. The possibility to obtain copper-antimony alloy with up to 80 wt. % Sb from methanesulfonic acid is shown. The deposition rate, morphology and the phase composition of the obtained coatings are established. The phenomena of formation of spatio-temporal structures in this alloy are described.It is determined that the observed structures consist of Cu2Sb and Cu11Sb3 intermetallic phases.

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Published
21-04-2016