Morphology and growth of electrodeposited silver powder particles

Maksimović, Vesna; Pavlović, Marko; Pavlović, Lj.J.; Tomić, Milorad V.; Jović, V.D.

doi:10.1016/j.hydromet.2006.10.004

Cited by 25 publications

(12 citation statements)

References 12 publications

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“…Various silver particles are formed by above mentioned methods for powder production [6,[19][20][21][22][23][24][25]. The interest for investigation of silver structures lies in their unique electrical, chemical, and optical characteristics.…”

Section: Introductionmentioning

confidence: 99%

Comparative Morphological and Crystallographic Analysis of Electrochemically- and Chemically-Produced Silver Powder Particles

Avramović

Pavlović

Maksimović

et al. 2017

Metals

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Silver powders chemically synthesized by reduction with hydrazine and those produced by electrolysis from the basic (nitrate) and complex (ammonium) electrolytes were examined by X-ray diffraction (XRD) and scanning electron microscopic (SEM) analysis of the produced particles. Morphologies of the obtained particles were very different at the macro level. The needle-like dendrites, as well as the mixture of irregular and regular crystals, were formed from the nitrate electrolyte, while the highly-branched pine-like dendrites with clearly noticeable spherical grains were formed from the ammonium electrolyte. The agglomerates of spherical grains were formed by reduction with hydrazine. In the particles obtained from the nitrate electrolyte, Ag crystallites were strongly oriented in the (111) plane. Although morphologies of Ag particles were very different at the macro level, the similarity at the micro level was observed between chemically-synthesized particles and those obtained by electrolysis from the ammonium electrolyte. Both types of particles were constructed from the spherical grains. This similarity at the micro level was accompanied by the similar XRD patterns, which were very close to the Ag standard with a random orientation of Ag crystallites. For the first time, morphologies of powder particles were correlated with their crystal structure.

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Section: Introductionmentioning

confidence: 99%

Comparative Morphological and Crystallographic Analysis of Electrochemically- and Chemically-Produced Silver Powder Particles

Avramović

Pavlović

Maksimović

et al. 2017

Metals

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“…The two-dimensional nucleation was also a characteristic of silver electrodeposition from nitrate solution [31,32], tin [33], and cadmium electrodeposition [30]. A polarization curve with an inflection point was also obtained in the case of silver electrodeposition from nitrate solution when a strong increase of current density was accompanied by the formation of dendrites [23,24], as well as in tin electrodeposition [33].…”

Section: Resultsmentioning

confidence: 99%

Formation of two-dimensional (2D) lead dendrites by application of different regimes of electrolysis

Nikolić

Branković

Lačnjevac

2011

J Solid State Electrochem

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Electrodeposition of lead from nitrate electrolyte in constant regimes of electrolysis was analyzed and the obtained powder lead deposits were examined by scanning electron microscopy. Polarization curve for lead electrodeposition consisted of two parts separated by an inflection point. The first part of the polarization curve was characterized by a linear dependence of the current density on overpotential. The linear part of the polarization curve corresponded to ohmic-controlled electrodeposition and single lead crystals were formed in this range of overpotentials. A rapid increase in the current density with increasing overpotential was observed after the inflection point (the second part of the polarization curve). Two-dimensional dendrites were the dominant morphological forms obtained at overpotentials and current densities belonging to the second part of the polarization curve, indicating that the rapid increase of the current density with increasing overpotential corresponded to activation controlled electrodeposition at the tips of the formed dendrites. Comparing the morphologies of the obtained lead deposits with those belonging to the same group of metals (metals characterized by a high exchange current density), such as silver, cadmium, and tin, a strong dependence between the nucleation type and the shape of dendrites for the metals belonging to the same group was established.

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“…1a) and massive particles (designated in Fig. 1b with number 1) to branched 3D dendrites [18,19] (designated in Fig. 1b with number 2) as well as in Fig.…”

Section: Sem Investigations Of Morphologymentioning

confidence: 92%

“…2b). The final shape of crystals is determined by planes with lower growth velocities [19]. With increased current density, the possibility for diffusion control is increased, and particles become more dendritic, acquiring a corn-like shape (Fig.…”

Section: Sem Investigations Of Morphologymentioning

confidence: 99%

Characterization of copper powder particles obtained by electrodeposition as function of different current densities

Maksimović

Pavlović²,

Pavlović³

et al. 2009

J Appl Electrochem

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Technological properties of powders depend on their granulometry and morphology. Very often one method is inadequate for characterization of powder particles. This article studied different methods intended for clear definition of the copper powder granulometric and morphological properties. Quantitative microstructural analysis, sieve analysis, and XRD analysis of copper powder as well as scanning electron microscopy analysis of the copper powder particles were performed. It was determined that selected stereological parameters, such as area, perimeter, and shape factor (roundness) show a linear decreasing dependence of current density, while the morphology was changed from massive to branched 3D dendrites. XRD analysis indicated that the crystallite sizes shows a linearly increasing dependence on current density. The shape factor could be a useful parameter for description of powder morphologies deposited by different regimes.

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Morphology and growth of electrodeposited silver powder particles

Cited by 25 publications

References 12 publications

Comparative Morphological and Crystallographic Analysis of Electrochemically- and Chemically-Produced Silver Powder Particles

Comparative Morphological and Crystallographic Analysis of Electrochemically- and Chemically-Produced Silver Powder Particles

Formation of two-dimensional (2D) lead dendrites by application of different regimes of electrolysis

Characterization of copper powder particles obtained by electrodeposition as function of different current densities

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