Electrochemical Obtaining of Co–Mo Coatings from Citrate Solutions Containing EDTA: Composition, Structure, and Micromechanical Properties

Sidel’nikova Svetlana; Volodina Galina; Grabco Daria; Dikusar Aleksandr

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SIDEL’NIKOVA, Svetlana, VOLODINA, Galina, GRABCO, Daria, DIKUSAR, Aleksandr. Electrochemical Obtaining of Co–Mo Coatings from Citrate Solutions Containing EDTA: Composition, Structure, and Micromechanical Properties . In: Surface Engineering and Applied Electrochemistry, 2007, nr. 6(43), pp. 425-430. ISSN 1068-3755.

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Surface Engineering and Applied Electrochemistry

Numărul 6(43) / 2007 / ISSN 1068-3755 /ISSNe 1934-8002

Electrochemical Obtaining of Co–Mo Coatings from Citrate Solutions Containing EDTA: Composition, Structure, and Micromechanical Properties

Pag. 425-430

Sidel’nikova Svetlana, Volodina Galina, Grabco Daria, Dikusar Aleksandr

Institute of Applied Physics, Academy of Sciences of Moldova

Disponibil în IBN: 14 decembrie 2013

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The preparation conditions, structure, rate of deposition, and microhardness of electrochemical cobalt–molybdenum coatings from citrate electrolyte containing sodium salt of ethylene diamine tetraacetic acid (EDTA) at pH = 4 in the range of current density of 2–10 A/dm2 at room temperature are studied. It is shown that, under the investigated conditions, a falling dependence of the current efficiency on the current density and an increase of the Mo concentration in the coatings are observed with the current density increasing. Textured coatings and the increase of the molybdenum concentration at high current density lead to an increase of the microhardness of the coatings. The correlation between the molybdenum concentration in the coatings and their quasi-static and sclerometric microhardness is shown.

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