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SM ISO690:2012 НАГИРНЫЙ, В., ПЕТРИЧЕНКО, С.. Электролитическое соосаждение оксидов Mn и Cr . In: Электронная обработка материалов, 2011, nr. 5(47), pp. 23-27. ISSN 0013-5739. |
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Электронная обработка материалов | ||||||
Numărul 5(47) / 2011 / ISSN 0013-5739 /ISSNe 2345-1718 | ||||||
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Pag. 23-27 | ||||||
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Using the method of polarization curves (Е-lgIa), kinetics of anodic processes at electrolytic codeposition of MnO2 and chromium oxides was investigated. It was found that co-deposition of chromium oxides led to substantial reduction of the current yield and speed of generation of the basic anodic product. Structure of combined residues of Mn and Cr formed on the anode differs from MnO2 structure considerably, which is manifested by reduction in size of crystalline grains with simultaneous transformation thereof into columnar configuration. Formation of columnar (filamentary) structure is explained by advanced nucleation and growth of MnO2 crystals, development of which along the base surface is blocked by molecules and microcrystalline aggregates of chromium oxide compounds. That provides for growth of developing grain normally to substrate surface by means of superposition of MnO2 two-dimensional nuclei. |
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