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Byung-Ryang Kim 2 Articles
Mechanical Properties and Fabrication of Nanostructured ReSi1.75 by High Frequency Induction Heated Combustion Synthesis
Byung-Ryang Kim, Su-Chul Kim, In-Jin Shon
J Korean Powder Metall Inst. 2009;16(1):16-21.
DOI: https://doi.org/10.4150/KPMI.2009.16.1.016
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Nanostructured ReSi_1.75 was synthesized to have high density via rapid and cost effective process named as high-frequency induction heated combustion synthesis(HFIHCS) method. For the process, mechanically activated Re-Si powder was used, which had been prepared by mechanical ball milling of Re and Si powders with mixing ratio of 1:1.75. Both combustion synthesis and densification were accomplished simultaneously by applying electric current and mechanical pressure of 80 MPa during the process. The average grain size, hardness, and fracture toughness of the compound were 210 nm, 1085 kg/mm2 and 4 MPacdotm1/2, respectively. The experimental results show that HFIHCS is a promising process for synthesis of nanostructured ReSi_1.75 which has a potential for both high temperature and thermo-electric applications.
High-Frequency Induction-Heated Combustion Synthesis and Consolidation of Nanostructured NbSi2 from Mechanically Activated Powders
Byung-Ryang Kim, Jin-Kook Yoon, Kee-Seok Nam, In-Jin Shon
J Korean Powder Metall Inst. 2008;15(4):279-284.
DOI: https://doi.org/10.4150/KPMI.2008.15.4.279
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Dense nanostructured NbSi_2 was synthesized by high-frequency induction-heated combustion synthesis (HFIHCS) method within 1 minute in one step from mechanically activated Nb and Si powders. Highly dense NbSi_2 with relative density of up to 99% was simultaneously synthesized and consolidated under the combined effects of an induced current and mechanical pressure of 60 MPa. The average grain size and mechanical properties (hardness and fracture toughness) of the compound were investigated.

Journal of Powder Materials : Journal of Powder Materials
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