Strategies for tailoring the properties of chemically precipitated metal powders

Lu, Lu; Sevonkaev, Igor; Kumar, Ajeet; Goia, Dan V.

doi:10.1016/j.powtec.2014.04.015

Cited by 24 publications

(22 citation statements)

References 143 publications

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“…The polycrystalline nature of Ag and Ni nanorods introduces some variation in their morphology, including length, diameter, and shape [15]. Generally, the surface energies of metal surfaces are quite high, thus metal surfaces are regarded as hydrophilic.…”

Section: Introductionmentioning

confidence: 99%

“…The final shape of each Ag or Ni nanoparticle is determined thermodynamically by minimizing the total surface energy and/or kinetically by the growth rate, especially by a ratio of the growth rate along the (100) direction to the growth rate along the (111) direction [16]. Wulff polyhedrons contain extended (111) faces and are therefore often incorporated in the structure of noble metallic particle structures [15]. The hydrophobicity of the Ni and Ag surfaces produced by electrochemically controlled deposition has been discussed previously [17] [18] and the surface geometry and crystallographic orientation enabled modulation of surface hydrophobicity.…”

Section: Introductionmentioning

confidence: 99%

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Hydrophobicity of Highly Ordered Nanorod Polycrystalline Nickel and Silver Surfaces

Macko¹,

Podrojková²,

Hrdý³

et al. 2019

JMMCE

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Highly ordered nickel and silver nanorods arrays prepared by alumina template assisted electrodeposition were investigated to determine the effect of the array geometry on metal surface hydrophobicity and adhesion forces. The nanorod geometry, clustering and pinning were used to characterize surface hydrophobicity and its modulation. A contribution of metal crystallographic orientation to the surface energy was calculated. To characterize nanorod array surface properties and elucidate the source of the particle adhesion effects has been calculated. The dispersive components of surface tension D S γ and surface polarizability k S , as surface features that markedly characterize hydrophobicity and adhesion, were calculated. The highest hydrophobicity was found for Ag nanorods with aspect ratio of 10 then Ni nanorods with aspect ratio 10. The same geometry of nanorods particles resulted in different surface hydrophobicity and it was ascribed to the orientation of Ag and Ni crystals formed on the top of nanorods. Due to high hydrophobicity nanorod array surfaces could be used as an antifouling surface in medicine to select areas on implant surface not to be colonized by cells and tissues.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hydrophobicity of Highly Ordered Nanorod Polycrystalline Nickel and Silver Surfaces

Macko¹,

Podrojková²,

Hrdý³

et al. 2019

JMMCE

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show abstract

“…The composition of both the core and the shell can be very diverse. Inorganic substances or metal powders are frequently used [25,26]. Among assets of core-shell pigments is their economy, because raw materials from natural sources can often be used as the cores [27].…”

Section: Introductionmentioning

confidence: 99%

Anti‐Corrosive Properties and Physical Resistance of Alkyd Resin–Based Coatings Containing Mg‐Zn‐Fe Spinels

Nechvílová¹,

Kalendová²,

Kohl³

2017

Magnetic Spinels - Synthesis, Properties and Applications

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The anti-corrosive and physical properties of organic coatings containing spinel pigments Mg 0.2 Zn 0.8 Fe 2 O 4 wer studied. Pigments exhibiting different particle morphologies were synthesized by high-temperature solid phase reactions. Core-shell pigments containing Fe-Mg-Zn ferrite shells deposited on non-isometric particles of mineral cores consisting of layered silicates were also prepared. The pigments were used in paints, the pigment volume concentrations in the binder being 5, 10 and 15%. Anti-corrosive efficiency was investigated for paint films containing one of three ferro-spinel (Mg 0.2 Zn 0.8 Fe 2 O 4)-based pigments or one of two core-shell pigments consisting of Fe-Mg-Zn shell and lamellar silicate-based cores. The paint properties were examined by accelerated corrosion tests and by physico-mechanical tests. The relationships between the pigment particle shape and the paint properties were examined. The effect of the pigment particle morphology on the mechanical properties of the paint films was also investigated. The dependence of the paint film properties on the pigment volume concentration was studied and the optimum concentrations providing the most efficient anti-corrosive protection were determined for each pigment.

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“…Ultrafine metal powders are valuable materials in both manufacture and laboratory; and they are of great importance in numerous applications including chemical engineering, electronic engineering, and aeronautics and astronautics technology [1][2][3][4][5][6][7]. One way to produce ultrafine metal powder is the inert gas condensation (IGC) method.…”

Section: Introductionmentioning

confidence: 99%

Influence of thermal process on particle size distribution of ultrafine magnesium powder prepared by inert gas condensation method

Wen

2015

Powder Technology

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Strategies for tailoring the properties of chemically precipitated metal powders

Cited by 24 publications

References 143 publications

Hydrophobicity of Highly Ordered Nanorod Polycrystalline Nickel and Silver Surfaces

Hydrophobicity of Highly Ordered Nanorod Polycrystalline Nickel and Silver Surfaces

Anti‐Corrosive Properties and Physical Resistance of Alkyd Resin–Based Coatings Containing Mg‐Zn‐Fe Spinels

Influence of thermal process on particle size distribution of ultrafine magnesium powder prepared by inert gas condensation method

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