Particle size evolution in Cu-15at% Al mechanically alloyed

Guerrero-Paz, J; Jaramillo-Vigueras, D.

doi:10.1016/s0965-9773(98)00143-3

Cited by 5 publications

(1 citation statement)

References 8 publications

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“…Among the physical methods are atomization, 1 splash quenching, 2 laser ablation, 3 ionic bombardment pulverization, 4 high-vacuum deposition, 5 laser synthesis from gaseous precursors, 6 and mechanical alloying. 7 The chemical methods involve the precipitation of the metallic components from their respective solutions, 8 followed by gas reduction using C, CO, or H 2 , [8][9][10] as well as the polyol method. [11][12][13][14] Among the different processing methods, the polyol method has been proven to be highly reliable for the synthesis of metallic nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of silver nanocrystals by a modified polyol method

Bregado-Gutiérrez¹,

Saldívar-García²,

López³

2007

J of Applied Polymer Sci

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A modification of the polyol method has been shown to result in improved efficiency and enhanced kinetics for the synthesis of silver nanocrystals when compared with the traditional polyol method. The Ag nanocrystals produced were characterized using Xray diffraction and transmission electron microscopy. Accordingly, the exhibited Ag crystal structure, corresponding lattice constants, and resultant particle sizes were determined by these means. In addition, using Fourier transform infrared spectroscopy, it was found that a solid-state reaction between the AgNO 3 and the Poly (vinylpyrrolidone) (PVP) takes place prior to their dissolution in ethylene glycol. Moreover, when crystals grow under total rest conditions, they do not develop a spherical morphology as in the traditional polyol method, but a well-defined geometric shape showing preferential crystallographic growth directions. Under the experimental conditions of this work, the exhibited nanocrystal shapes were quasi-planar hexagonal. Apparently, PVP interacts with the FCC crystal structure promoting growth on the {100} preferential direction by playing the role of an atomic arranger.

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