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- Features of Nickel Nanoparticles Structure Synthesized by the Spark Discharge Method
- C. K. Rhee, A. D. Maksimov, I. V. Beketov, A. I. Medvedev, A. M. Murzakaev
- J Korean Powder Metall Inst. 2020;27(6):464-467. Published online December 1, 2020
- DOI: https://doi.org/10.4150/KPMI.2020.27.6.464
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Abstract
PDF Nickel nanopowders are obtained by the spark discharge method, which is based on the evaporation of the electrode surface under the action of the discharge current, followed by vapor condensation and the formation of nanoparticles. Nickel electrodes with a purity of 99.99% are used to synthesize the nickel nanoparticles in the setup. Nitrogen is used as the carrier gas with a purity of 99.998%. XRD, TEM, and EDX analyses of the nanopowders are performed. Moreover, HRTEM images with measured interplanar spacings are obtained. In the nickel nanopowder samples, a phase of approximately 90 wt% with an expanded crystal lattice of 6.5% on average is found. The results indicate an unusual process of nickel nanoparticle formation when the spark discharge method is employed.
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Citations
Citations to this article as recorded by
- Comparative Analysis of Craters Formed on Cathode and Anode Spots of a Spark Discharge in Air on Iron Electrodes
A. D. Maksimov, E. I. Azarkevich, I. V. Beketov, D. S. Koleukh
Bulletin of the Russian Academy of Sciences: Physics.2023; 87(S2): S274. CrossRef
- Comparative Analysis of Craters Formed on Cathode and Anode Spots of a Spark Discharge in Air on Iron Electrodes
- [Korean]
- Fabrication of Nanostructured Alumina by the Combined Processes of Magnetic Pulsed Compaction (MPC) and Spark Plasma Sintering (SPS)
- J. K. Lee, S. J. Hong, M. K. Lee, C. K. Rhee
- J Korean Powder Metall Inst. 2005;12(5):345-350.
- DOI: https://doi.org/10.4150/KPMI.2005.12.5.345
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- 1 Citations
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Abstract
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- In this study the nanostructured alpha-Al_2O_3 ceramics have been fabricated by the combined application of magnetic pulsed compaction (MPC) and subsequent spark plasma sintering (SPS), and their density and hardness properties were investigated. The alpha-Al_2O_3 prepared by the combined processes showed an increase by 8.4% in density, approaching the value close to the true density, and an enhancement by 210~400;Hv in hardness, compared to those fabricated by MPC or static compaction method followed by sintering treatment.
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Citations
Citations to this article as recorded by- Milling Behaviors of Al-B4C Composite Powders Fabricated by Mechanical Milling Process
Sung-Mo Hong, Jin-Ju Park, Eun-Kwang Park, Min-Ku Lee, Chang-Kyu Rhee, Ju-Myoung Kim, Jin-Kyu Lee
Journal of Korean Powder Metallurgy Institute.2012; 19(4): 291. CrossRef
- Milling Behaviors of Al-B4C Composite Powders Fabricated by Mechanical Milling Process
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