Characterisation of Zn–Mo alloy layers electrodeposited from aqueous citrate solution

Kazimierczak, Honorata; Ozga, P.; Świątek, Z.; Bielańska, Elżbieta

doi:10.1016/j.jallcom.2013.04.205

Cited by 26 publications

(11 citation statements)

References 27 publications

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“…Also, molybdenum included in the electrodeposited film has been recognized by ICP-AES and glow discharge optical emission spectroscopy. 27 These findings indicate that copper-molybdenum composites were obtained by above mentioned electrodeposition.…”

Section: Methodsmentioning

confidence: 62%

Copper-Molybdenum Source Ratio and Complexing Agent for High Molybdenum Content in Electrodeposited Cu-Mo

Gotou

Arakawa

Watanabe

et al. 2014

J. Electrochem. Soc.

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Cu-Mo composites have been one of candidates for material of heat-sinks in electronic devices. We obtained Cu-Mo composites by electrodeposition using CuSO 4 and Na 2 MoO 4 with trisodium citrate as complexing agent. The presence of molybdenum in Cu-Mo was demonstrated by X-ray photoelectron spectroscopy and inductively coupled plasma atomic emission spectroscopy. The molybdenum content in Cu-Mo composites depended on the concentration ratio of Na 2 MoO 4 /(Na 2 MoO 4 + CuSO 4 ) in the electrolyte, kinds and concentration of complexing agents. The mol ratio of Na 2 MoO 4 /(Na 2 MoO 4 + CuSO 4 ), from 0.75 to 0.87 provided larger molybdenum content at 0.05 A/dm 2 of electrodeposition current. The molybdenum content increased with decreasing current density during electrodeposition in the range of 0.05-0.3 A/dm 2 . Trisodium citrate was the most effective complexing agent among trisodium citrate, glycolic acid, EDTA (4Na) and combinations of them for increasing molybdenum content. The molybdenum content reached up to 22.9 wt% at 0.396 mol/dm 3 of trisodium citrate concentration. X-ray diffraction shows that no peaks related to molybdenum was observed, moreover, the intensity and the width of Cu(111) peaks decreased and enlarged with increasing molybdenum content. These indicate that the structure of molybdenum in copper-molybdenum composites was amorphous, furthermore, higher molybdenum content made copper structure close to amorphous.

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Section: Methodsmentioning

confidence: 62%

Copper-Molybdenum Source Ratio and Complexing Agent for High Molybdenum Content in Electrodeposited Cu-Mo

Gotou

Arakawa

Watanabe

et al. 2014

J. Electrochem. Soc.

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“…In our previous study [4], we showed that a uniform alloy composi- tion along its cross-section was observed. The molybdenum and zinc were very evenly distributed within the coating.…”

Section: Results and Discussion Structure And Microstructure Of Depomentioning

confidence: 77%

“…The chemical composition of the used electrolytes and details of electrodeposition process are presented in [4] (see also Table 1). …”

Section: Electrodeposition Process and Chemical Compositionmentioning

confidence: 99%

Structural and Microstructural Analysis of Zn–Mo Alloy Layers Electrodeposited from Aqueous Citrate Solution

Świątek¹,

Kazimierczak²,

Ozga³

et al. 2018

Metallofiz. Noveishie Tekhnol.

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The paper presents results of the phase-composition and microstructure studies of the Zn-Mo alloy electrodeposited layers. The Zn-Mo coatings are electrodeposited from sulphate-citrate electrolytes on a steel substrate. As revealed in SEM, TEM and x-ray diffraction studies, the coatings consist of the phase crystallized in hexagonal system and contain less than 0.8% wt. Mo built-in the Zn-crystal structure. The presence of Mo atoms causes fragmentation of the crystallites.Key words: electrodeposition, corrosion, zinc-based alloys, phase composition, x-ray diffraction.У статті представлено результати досліджень фазового складу та мікро-структури електролітично осаджених шарів стопів Zn-Mo. Покриття ZnMo було одержано на сталевому підложжі електролітичним осадженням з сульфат-цитратних електролітів. Дослідження методами СЕМ, TEM і ре-нтґенівської дифракції показали, що покриття складаються з кристалізо-ваної в гексагональній системі фази та містять менше 0,8% мас. Мо, вбу-дованого у кристалічну ґратницю цинку. Наявність атомів Мо викликає Ключові слова: електролітичне осадження, корозія, стопи на основі цин-ку, фазовий склад, рентґенівська дифракція.В статье представлены результаты исследований фазового состава и мик-роструктуры, электролитически осаждённых слоёв сплавов Zn-Mo. По-крытия Zn-Mo были получены на стальной подложке электролитическим осаждением из сульфат-цитратных электролитов. Исследования метода-ми СЭМ, TEM и рентгеновской дифракции показали, что покрытия состо-ят из кристаллизованной в гексагональной системе фазы и содержат ме-нее 0,8% масс. Мо, встроенного в кристаллическую решётку цинка. Наличие атомов Мо вызывает фрагментацию кристаллитов.Ключевые слова: электролитическое осаждение, коррозия, сплавы на ос-нове цинка, фазовый состав, рентгеновская дифракция.

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“…Recent research shows the possibility of Mo deposition with Zn and Cu 14,[16][17][18] . In these studies, the Zn-Mo composite is proposed as a corrosion resistant coating with low danger and environmentally friendly, in contrast to other anticorrosive alloys containing cadmium and chromium.…”

Section: Introductionmentioning

confidence: 99%

Electrodeposition study of the Cu-Zn-Mo system in citrate/sulfate medium

et al. 2019

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Alloys and composites that contain molybdenum have been studied due to their excellent properties, such as corrosion resistance and catalytic activity. In this work, the parameters for Cu-Zn-Mo system electrodeposition were studied, such as deposition potentials and concentration of electroactive species. The deposition potentials were examined using cyclic voltammetry and anodic linear stripping voltammetry (ALSV), the deposit morphology was evaluated using scanning electron microscopy (SEM) and crystallographic characterization was carried out for X-ray diffraction (XRD). The voltammetry studies indicated co-deposition of the metals in potentials more negative than -1.2 V, and a potential deposition at -1.5 V was chosen. The coatings presented morphology compact with small agglomerated particles with cauliflower structures, and the content of molybdenum, copper, and zinc ranged from 5 to 8%, 30 to 40% and 20 to 28%, respectively.

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Characterisation of Zn–Mo alloy layers electrodeposited from aqueous citrate solution

Cited by 26 publications

References 27 publications

Copper-Molybdenum Source Ratio and Complexing Agent for High Molybdenum Content in Electrodeposited Cu-Mo

Copper-Molybdenum Source Ratio and Complexing Agent for High Molybdenum Content in Electrodeposited Cu-Mo

Structural and Microstructural Analysis of Zn–Mo Alloy Layers Electrodeposited from Aqueous Citrate Solution

Electrodeposition study of the Cu-Zn-Mo system in citrate/sulfate medium

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