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Получение Cо-W покрытий из концентрированных глюконатных электролитов

Authors: Ivaşcu, S.H.; Ivashku, S.K.; Bobanova, J.I.; Bobanova, Z.I.; Iuşcenco, S.P.; Yushchenko, S.P.; Croitoru, D.M.; +1 Authors

Получение Cо-W покрытий из концентрированных глюконатных электролитов

Abstract

The electrodeposition and properties of the Co-W alloy obtained from concentrated gluconate electrolytes were studied. It was shown that high-quality alloy coatings with a high current efficiency are formed by variating the precursors from 0.1 M to 0.5 M at a concentration ratio of the Cit ligand and alloy-forming components Co2+/WO4 + 5:1. Based on the results of the X-ray structural analysis, it was concluded that the Co-W alloy can be formed as a polycrystalline substitution solid solution and a thermodynamically stable Co3W compound, which, depending on the content of the alloying element tungsten, can be either polycrystalline or finely dispersed. High values of microhardness of the alloy of 800 kg/mm2 obtained at a current density of 1 A/dm2 can be associated with the electrochemical deposition of the Co3W intermetallic compound, which has a high microhardness.

Исследованы электроосаждение и свойства сплава Со-W, полученного из концентрированных глюконатных электролитов. Показано, что качественные покрытия сплава с высоким выходом по току формируются при изменении прекурсоров от 0,1 до 0,5 М при соотношении концентраций лиганда Cit и сплавообразующих компонентов Со2+/WO4 + 5:1. По результатам рентгеноструктурного анализа сделан вывод, что сплав Со-W формирует как поликристаллические твердые растворы замещения, так и термодинамически устойчивые соединения Со3W, которые в зависимости от содержания легирующего элемента вольфрама могут быть как поликристаллическими, так и мелкодисперсными. Высокие значения микротвердости сплава 800 кг/мм2, полученные при плотности тока 1 А/дм2, могут быть связаны с электрохимическим осаждением интерметаллида Со3W, который имеет высокую микротвердость.

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Keywords

Co-W alloys, composition of alloys, электролит, deposition rate, microhardness, скорость осаждения, микротвердость, electrolyte, structure, сплавы Co-W, структура, состав сплавов

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green