한국전기전자재료학회논문지 (Journal of the Korean Institute of Electrical and Electronic Material Engineers)

  • 제11권11호
  • /
  • Pages.1022-1026
  • /
  • 1998
  • /
  • 1226-7945(pISSN)
  • /
  • 2288-3258(eISSN)
한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
권호 표지

내부확산법으로 제조한 $Nb_3$Sn선재의 미세조직 및 임계전류밀도특성

Microstructure and Critical Current Density of $Nb_3$Sn wire processed by Internal Tin Method

  • 김상철 (한국전기연구소 초전도 응용연구사업팀) ;
  • 오상수 (한국전기연구소 초전도 응용연구사업팀) ;
  • 하동우 (한국전기연구소 초전도 응용연구사업팀) ;
  • 하홍수 (한국전기연구소 초전도 응용연구사업팀) ;
  • 류강식 (한국전기연구소 초전도 응용연구사업팀) ;
  • 권해웅 (부경대학교 재료공학과)
  • 발행 : 1998.11.01
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초록

The mutifilamentary $Nb_3$Sn wire containing 135 Nb filaments was manufactured by the internal tin method. The critical current density ($J_C$) in magnetic fields for the wires heat-treated at $660^{/circ}C$ and $700^{/circ}C$ were investigated. The Non-Cu $J_C$ and n-value of 0.82 mm$\phi$ $Nb_3$Sn wire heat-treated at $700^{/circ}C$ for 240 hours was approximately 450 A/$mm^2$ at 12T, 4.2K and 14, respectively. Also the $B_{C2}$ of $Nb_3$Sn wire extrapolated by Kramer plot was 27.2T. The wire heat-treated at $700^{/circ}C$ for 240 hours showed smaller residual tin concentration in the matrix and the larger area of $Nb_3$Sn layer as comparison with the wire heat-treated at $660^{/circ}C$.

키워드

참고문헌

  1. IEEE Trans. Appl. Supercond. v.5 no.2 Powder Metallurgy Processed Nb₃Sn(Ta) Wire for High Field NMR Magnets S. Pourrahimi;J. Williams;K. Demoranville;D. Rodrigues
  2. IEEE Trans. Appl. Supercond. v.3 no.1 Nb₃Sn Superconductor for fusion application : facing NET-ITER specifications, evaluation of industrial capability J. L. Duchateau;D. Ciazynski;J.C. Vallier
  3. IEEE Trans. Magn. v.32 no.4 The Fabrication and Properties of Nb₃Sn Superconductors by the Internal Tin Process B. Jakob;G. Paszor;A. Cerri;F. Vanini
  4. IEEE Trans. Magn. v.32 no.4 Changes of Tc, Jc and Stoichiometry of Nb₃Sn Phase Formed During Internal Tin Diffusion Process Bartek A. Glowacki
  5. IEEE Trans. Appl. Supercond. v.7 no.2 Improvements in the Properties of Internal-Tin Nb₃Sn Strands E. Gregory;E. Gulko;T. Pyon;L. F. Goodrich
  6. IEEE Trans. Appl. Supercond., Paper LEC-7 Recent Progress in Nb₃Sn Development at Oxford Superconductivity Technology R. Hentges;K. R. Marken Jr.;Y. Zhang
  7. The effect of Heat Treatment, Tin concentration and filament size on the Properties of Internal-Tin Nb₃Sn T. Pyon;E. Galko;E. Gregory
  8. IEEE Trans. Appl. Supercond. v.3 no.1 Development of A (NbTi)₃Sn Strand for The ITER CS scalable Model Coil T. Isono;F. Hosono;N. Koizumi;M. Sugimoto(et al.)
  9. IEEE Trans. Magn. v.32 no.4 Conductor Fabrication for ITER Model Coils P. Bruzzone;N. Mitchell;M. Steeves;M. Spadoni;Y. Takahashi;V. E. Sytnitov
  10. J. Appl. Phys. v.44 E. J. Kramer
  11. 低溫工學 v.31 no.6 Explanation of the Growth Mechanism on Bridging of Nb₃Sn Superconducting Filaments by Internal-Tin Diffusion Process Yoshio Kubo;Kunihiko Egawa