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| Ultima descărcare din IBN: 2018-10-16 13:56 |
 SM ISO690:2012СИЛКИН, Сергей, БЕЛЕВСКИЙ, С., GRADINAR, A., ПЕТРЕНКО, В., ЯКОВЕЦ, И., ЦЫНЦАРУ, Н.И., ДИКУСАР, Александр. Электроосаждение нанокристаллических Co-W покрытий из цитратных электролитов в контролируемых гидродинамических условиях.
III. Микро- и макрораспределение скоростей осаждения, состава и механических свойств
. In: Электронная обработка материалов, 2010, nr. 3(46), pp. 9-18. ISSN 0013-5739. |
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 Электронная обработка материалов |
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| Numărul 3(46) / 2010 / ISSN 0013-5739 /ISSNe 2345-1718 | ||||||
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| Pag. 9-18 | ||||||
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By means of the Hull cell with a rotating cylindrical electrode (RCE) influence of hydrodynamic conditions on plating rate and it micro- and macro-distributions, structure and microhardness of the CoW coatings deposited from citrate electrolyte with cobalt sulphate (0,2 mol/l), sodium tungstate (0,2 mol/l) at pH = 6,7 and solution temperature 600С in the range of Re numbers 0-3000 was investigated . It is shown, that hydrodynamic conditions of deposition practically do not influence a surface roughness, but influence on electrolyte throwing power. Correlation between hydrodynamic conditions, deposition rate (as the sequence of current efficiency increase) and structure of coatings, and also their distribution on a surface is established. It is shown, that at certain modes of process at high deposition rates high uniformity of covering structure with the high content of tungsten can be reached. The maximum surface microhardness is reached under the same conditions. |
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