Sintering and Electrical Properties of Silver Powders Prepared by High-Pressure Water Atomization

Ogihara, Takashi; Kubo, Toshihiko; Minami, Kenji; Yasuda, Hirokazu; Sato, Yasuaki; Aoyagi, Nobuyoshi; Arita, Shigehiro; Harada, Masahiro; Harada, Akio

doi:10.2497/jjspm.63.1027

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…Although the reason why the average particle size of Ag nanoparticles depends on the arc current is unclear in this study, it is suggested that further miniaturization of Ag nanoparticles can be attained by controlling the particle preparation conditions, such as the arc current and gas atmosphere. The average Ag particle size in this study was smaller than that in previous studies (highpressure water atomization 7) and chemical reduction processes 8) ). Therefore, it is concluded that small, uniform, and spherical Ag nanoparticles can be prepared by the arc plasma method.…”

Section: Crystallite Sizecontrasting

confidence: 78%

“…Various methods for preparing Ag particles, such as milling, 5) atomization, 6,7) and chemical reduction processes, 8) have been proposed. However, these methods have various challenges, such as the preparation of nanoparticles, avoidance of contamination by impurities, and minimization of energy consumption for the preparation of nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Silver Nanoparticles by Arc Plasma Method and Their Properties

et al. 2019

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Ag nanoparticles were prepared by the arc plasma method under various conditions. The particle properties, such as size, size distribution, shape, and purity, were investigated. It was revealed that the average size of the Ag nanoparticles decreased with increasing arc current during the application of the arc plasma method. Moreover, the crystallite size measured using X-ray diffraction (XRD) was smaller than the average particle size, regardless of the arc current. Thus, it was concluded that the Ag nanoparticles prepared by this method are polycrystalline particles. No Ag oxides were observed in the nanoparticles by either field emission scanning electron microscopy observations or XRD analysis. Moreover, the solid solution of oxygen in Ag was not detected by XRD or wavelength dispersive X-ray spectrometry analysis.

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Section: Crystallite Sizecontrasting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Preparation of Silver Nanoparticles by Arc Plasma Method and Their Properties

et al. 2019

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Effect of Production Factors on Particle Size of Silver Powder Produced through Water Atomization

Ogihara

Kubo

Harada

et al. 2019

J. Japan Inst. Metals and Materials

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Silver powder was prepared through water atomization at 1280 under the nitrogen atmosphere. As prepared silver powder consisted of various particles with morphologies such as spherical, irregular and coarse and had high crystallinity. Relationship between the volume average particle size D 50 of silver powder and production factors was investigated. In this work, the production factors such as atomization pressure, angle, nozzle diameter, suction amount of air and water temperature were selected to verify the in uence on D 50. It was found that D 50 decreased with decreasing atomization pressure, angle, nozzle diameter and water temperature. When the atomization pressure was 100 MPa, the uniform water stream was disturbed and then D 50 became higher. On the other hand, it was con rmed that D 50 decreased with increasing suction amount under reduced pressure. Crystallite size and crystallinity of silver powder increased with decreasing water temperature.

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Powder Properties of Ag Nanoparticles Prepared by Arc Plasma Method

Mineta

Saito

Yoshihara

et al. 2019

J. Japan Inst. Metals and Materials

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Ag nanoparticles were prepared by the arc plasma method with various conditions. The powder properties such as the particle size, its distribution, particle shape, and purity of those were investigated. It is revealed that an average particle size of the Ag nanoparticles decreases with increasing the arc current during the arc plasma method. Moreover, it is con rmed that the crystallite size measured using X ray diffraction XRD was smaller than the average particle size, regardless of the arc current. Thus, it is concluded that the Ag nanoparticles prepared by this method are polycrystalline particles. No Ag oxides in the nanoparticles were recognized both by eld emission scanning electron microscopy FE SEM observations and XRD analysis. Moreover, the solid solution of oxygen in Ag was not measured by XRD and wavelength dispersive X ray spectrometry WDS analysis.

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Sintering and Electrical Properties of Silver Powders Prepared by High-Pressure Water Atomization

Cited by 4 publications

References 15 publications

Preparation of Silver Nanoparticles by Arc Plasma Method and Their Properties

Preparation of Silver Nanoparticles by Arc Plasma Method and Their Properties

Effect of Production Factors on Particle Size of Silver Powder Produced through Water Atomization

Powder Properties of Ag Nanoparticles Prepared by Arc Plasma Method

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