Phase Control of Ti–Fe Nanoparticles Prepared by Pulsed Wire Discharge

Tokoi, Yoshinori; Orikawa, Takuya; Suzuki, Tsuneo; Nakayama, Tadachika; Suematsu, Hisayuki; Niihara, Koichi

doi:10.1143/jjap.50.01bj06

Cited by 5 publications

(2 citation statements)

References 25 publications

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“…15) Metal nanoparticles such as Cu, Ag, Au, and Al have been prepared by PWD. 12,15) In addition, alloy nanoparticles such as NiTi, 16) NiFe 2 O 4 , 17) TiFe, 18) and NiAl 19) have been synthesized by PWD. PWD using alloy wires, 16,20,21) parallel wires (namely, not twisted but just mutually contacting wires 17,22) ), and stranded/wound/twisted wires 18,19,23) has been carried out for alloy nanoparticle preparation.…”

Section: Introductionmentioning

confidence: 99%

Determining factor of median diameter in intermetallic compound nanoparticles prepared by pulsed wire discharge

Nagasawa

Koishi

Tokoi

et al. 2014

Jpn. J. Appl. Phys.

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The preparation of NiAl intermetallic compound nanoparticles was carried out by pulsed wire discharge (PWD) using twisted pure Ni and Al wires in N2 ambient gas with varying number of turns of the wire (N t), energy ratio (K), and ambient gas pressure (P). From the voltage and current waveforms during the wire heating, the energy deposition ratio up to the voltage peak (K p) was calculated. It increased with an increase in N t to 0.4 turns/mm and with increases in K and P. Under all the conditions, with an increase in K p, the Ni composition ratio of the prepared particles (C Ni) became closer to that of the wire (= 51.2 mol %). Furthermore, the collection rate (R c) increased and the median particle diameter (d 50) decreased. In particular, the change in d 50 due to the change in N t was not predicted by the relationship of d 50 and D th in our previous report. Single-phase NiAl intermetallic compound nanoparticles were successfully prepared under the condition in which N t is 0.4 turns/mm, K is 3.4, and P is 100 kPa, where relatively high value of K p was obtained. From these results, K p was determined to be an important factor that determines the composition, collection rate, and median diameter of intermetallic compound nanoparticles synthesized by PWD using different kinds of twisted wires under various experimental conditions. This may be because of the selective wire heating in high-resistance parts that are associated with the introduction of lattice defects and/or necks by overwinding.

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Section: Introductionmentioning

confidence: 99%

Determining factor of median diameter in intermetallic compound nanoparticles prepared by pulsed wire discharge

Nagasawa

Koishi

Tokoi

et al. 2014

Jpn. J. Appl. Phys.

Self Cite

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“…Thus WE consumes only metal wires and electricity, and generates little waste 24 25 . More than 20 different metal-based NPs, including Cu and several of its alloys have been prepared by WE in various gaseous and liquid environments 26 27 28 29 30 31 32 33 34 35 36 37 . Disadvantages of WE relative to chemical methods include the fact that it is more difficult to produce a NP product that is monodisperse in size.…”

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confidence: 99%

Production of Oxidation-Resistant Cu-Based Nanoparticles by Wire Explosion

Kawamura

Alvarez

Stewart

et al. 2015

Sci Rep

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The low performance or high cost of commercially available conductive inks limits the advancement of printed electronics. This article studies the explosion of metal wires in aqueous solutions as a simple, low-cost, and environmentally friendly method to prepare metallic nanoparticles consisting of Cu and Cu alloys for use in affordable, highly conductive inks. Addition of 0.2 M ascorbic acid to an aqueous explosion medium prevented the formation of Cu2O shells around Cu nanoparticles, and allowed for the printing of conductive lines directly from these nanoparticles with no post-treatment. Cu alloy nanoparticles were generated from metal wires that were alloyed as purchased, or from two wires of different metals that were twisted together. Cu nanoparticles alloyed with 1% Sn, 5% Ag, 5% Ni and 30% Ni had electrical conductivities similar to Cu but unlike Cu, remained conductive after 24 hrs at 85 °C and 85% RH.

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Metal, Metal Composite, and Composited Nanoparticles Obtained by Electrical Explosion of Wires

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2021

Nanotechnol Russia

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Phase Control of Ti–Fe Nanoparticles Prepared by Pulsed Wire Discharge

Cited by 5 publications

References 25 publications

Determining factor of median diameter in intermetallic compound nanoparticles prepared by pulsed wire discharge

Determining factor of median diameter in intermetallic compound nanoparticles prepared by pulsed wire discharge

Production of Oxidation-Resistant Cu-Based Nanoparticles by Wire Explosion

Metal, Metal Composite, and Composited Nanoparticles Obtained by Electrical Explosion of Wires

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