- High-Frequency Induction-Heated Combustion Synthesis and Consolidation of Nanostructured NbSi2 from Mechanically Activated Powders
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Byung-Ryang Kim, Jin-Kook Yoon, Kee-Seok Nam, In-Jin Shon
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J Korean Powder Metall Inst. 2008;15(4):279-284.
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DOI: https://doi.org/10.4150/KPMI.2008.15.4.279
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 Abstract
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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.
- Mechanical Properties and Fabrication of Nanostructured 2MoSi2-SiC by Pulsed Current Activated Combustion Synthesis
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In-Jin Shon, Dong-Ki Kim, In-Kyoon Jeong, Jung-Mann Doh, Jin-Kook Yoon, In-Yong Ko
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J Korean Powder Metall Inst. 2007;14(4):245-250.
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DOI: https://doi.org/10.4150/KPMI.2007.14.4.245
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Abstract
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- Dense nanostructured 2MoSi_2-SiC composites were synthesized by the pulsed current activated combustion synthesis (PCACS) method within 3 minutes in one step from mechanically activated powders of Mo_2C and 5Si. Simultaneous combustion synthesis and densification were accomplished under the combined effects of a pulsed current and mechanical pressure. Highly dense 2MoSi_2-SiC with relative density of up to 96% was produced under simultaneous application of a 60 MPa pressure and the pulsed current. The average grain size of MoSi_2 and SiC were about 120 nm and 90 nm, respectively. The hardness and fracture toughness values obtained were 1350 kg/mm2 and 4 MPacdotm1/2, respectively.
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