• Title/Summary/Keyword: 고온자전합성

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Preparation of TaC Powder from the Waste of Ta powder Fabrication Process for Capacitor (Capacitor용 Ta분말 제조공정 Waste Ta를 이용한 TaC분말 제조)

  • Park Je-Shin;Suh Chang-Youl;Yaon Jae-Sik;Bae In-Sung;Park Hyeoung-Ho
    • Resources Recycling
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    • v.12 no.4
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    • pp.51-57
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    • 2003

  • Using the wastes of Ta powder fabrication process for capacitor, TaC powder was synthesized by SHS method. In previous to synthesis, the waste Ta was needed of milling and deoxidization treatments for active reaction and prevention of oxidation. In SHS reaction, it was found that the TaC single phase was obtained in composition of 5～6wt.％C. The reaction temperature was affected by the compaction pressure of the specimens, exhibiting the maximum values at 1600psi, respectively.

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Finite Element Analysis of the Self-propagating High-temperature Synthesis Of $MoSi_2$ ($MoSi_2$ 자전 고온 반응 합성의 유한 요소 해석)

  • 채수원;손창현;김용석
    • Journal of the Korean Society for Precision Engineering
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    • v.15 no.12
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    • pp.120-127
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    • 1998

  • The finite element method has been used to model and analyze the heat transfer phenomena during manufacturing process of $MoSi_2$ by SHS(Self-propagating High-temperature Synthesis). For this purpose nonlinear transient heat transfer analyses by using ANSYS have been performed to estimate the temperature distributions and the peak temperature in the test specimen. The effects of manufacturing process parameters such as pre-heating temperatures, the velocity of reaction zone have been investigated. The results of the analysis have been compared with the experimental results.

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An Update Technology Trend in Iron Oxide (산화철의 기술개발동향)

  • Sohn Jin-Gun
    • Resources Recycling
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    • v.12 no.6
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    • pp.3-7
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    • 2003

  • For the manufacture of iron oxide, the hydro-process and the pyre-process are conventionally used. Both processes use a huge amount of chemicals in reaction which affect the environment harmfully. This paper introduced the new environment friendly processes; the bio-chemical process and the self propagating high temperature synthesis process.

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