한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제32권6호
  • /
  • Pages.659-668
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  • 1995
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  • 1229-7801(pISSN)
  • /
  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
권호 표지

SHS법에 의한 ZrC 합성 및 온도 Profile 분석

Synthesis and Temperature Profile Analysis of ZrC by SHS Method

  • 이형복 (명지대학교 무기재료공학과) ;
  • 조건 (한국과학기술원 무기재료공학과) ;
  • 이재원 (명지대학교 무기재료공학과)
  • 발행 : 1995.06.01
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초록

Zirconium carbide was prepared from the mixture of metal zirconium and carbon powders in argon atmosphere by Self-propagating High-temperature Synthesis (SHS) in order to obtain the best carbon source and dilution contents. The most exellent result was obtained in the case that active carbon was added as a starting material, 20~30 wt% dilution content. From thermal profile analysis an apparent activation energy of 118 KJ/mol was calculated. The maximum heating rate achieved during 15 wt% ZrC reaction by product dilution method was approximately 1.54$\times$105 K/s. Coupling this value with the measured wave velocity of 1.026cm/s yielded a maximum thermal gradient fo $1.5\times$105 K/cm. Using the definition of t* and the measured wave velocity, the effective thermal diffusivity, $\alpha$, was calculated to be 0.62$\times$102 $\textrm{cm}^2$/s.

키워드

참고문헌

  1. Anistropy in Single-Crystal Refractory Compounds v.1 D.L. Harrod;L.R. Fleisher;F.W. Valdiek(ed.);S.A. Mersol(ed.)
  2. The Refractory Carbides: The Zirconium-Zirconium Carbide System Storms E.K.
  3. Transition Metal Cardides and Nitrides: General Properties, Preparation, and Characterization Toth L.E.
  4. Prog. Sol State Chem. v.6 Transition Metal Carbides: Zirconium Carbide System Williame W.S.
  5. Acad. Sci. USSR Chem. Phys. v.204 Self-Propagationg High-Temp. Synthesis of Refractory Inorganic Compounds A.E. Merzhanov;I.P. Borovinkaya
  6. Am. Soc. Mech. Engrs. 3rd Symp. Themophys. Properties. Parperers, La Fayette. Ind., Thermophysical Properties at Extream Temp. and Pressures Farr J.D.;Witterman W.G.;Stone P.L.;Westrum E.F., Jr;S. Gratch(ed.)
  7. J. Am. Ceram. Soc. v.48 no.234 Characterization of the Zr-ZrC System Sara R.V.
  8. Battle: Metals and Ceramics Information Center v.2 Engineering Property Data on Selected Ceramics: vol.2 Carbides
  9. AICHE J. v.36 Control of TiB₂SHS Reactions by Inert Diutions and Mechanism Constraint T. Koftke(et al.)
  10. Mater. Sci. Rep. v.3 Self-Propagating Exothermic Reactions;The Synthesis of High-Temperature Materials by Combution Z.A. Munir;V. Anselmi-Tamburini
  11. Anal. Chem. v.36 no.8 Smoothing anf Differentiation of Data by Simplified Least-Squares Procedures A. Savitzky;M.J.E. Golay
  12. Poro Shkovaya Metallurgiya v.10 no.202 Reactive Properties Exhibited by Various Types of Carbon During the Preparation of Titanium Carbide by Self-Propagating High-Temp. Synthesis V.M. Shkio(et al.)
  13. Acta Cryst. v.A28 Vacancy Short-Range order in Substoichiometric Transition Metal Catbides and Nitrides with the Na-Cl Structure. Ⅰ: Electron Diffraction Studies of Short-range Ordered Compounds Billingham J.;Bell P.S.;Lewis M.H.
  14. J. Am. Ceram. Soc. v.75 no.1 Temperature Progfile Analysis in Combustion Synthesis:Ⅱ, Experimental Observations S.D. Dunmead;Z.A. Munir;J.B. Holt
  15. Combust. Flame. v.6 Kinetic Analysis of Temperature Profile in Pyrotechnic Syustem Bodington;P.G. Laye;J. Tipping;D. Whalley
  16. Combust Flame v.24 A Study of Pyrotechnic Reaction by Temperature Profile Analysis and Differential Thermal Analysis Bodington;P.G. Laye;H. Morris;C.A. Rosser;E.L. Charsle;M.C. Ford;D.E. Tolhurst