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Heat Treatment Effects on the Surface of Insulation Material

  • M. Wake
  • H. Nakai
  • S. Nakayama
  • A. Kajita
Chapter

Abstract

The characteristics of insulating fibers are affected by surface chemicals. The effect of the heat treatment on the surface of insulation material was studied in comparison with the effect in the conductor surface. The use of densitometer readings was found to be useful for the study of oxidization of the superconducting strands and in the removal process of binders on the surface of insulation materials. The oxidization of a copper surface increases with temperature starting at an early stage but chromium plating can prevent this effect until the temperature goes up to 295°C. Although it seems to be necessary to go far beyond 300°C to completely remove the binder, a 290°C heat treatment in air can provide the essential binder removal without damaging the chromium plated conductor. A proper choice in binder makes it’s removal possible after the process ofwinding a coil.

Keywords

Palmitic Acid Insulation Material Chromium Plating Standard Binder Binder Removal 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    M. Wake, “Conceptual Design of Nb3Sn High Field Magnet”, KEK Internal 98-3, 17 pp (1998).Google Scholar
  2. 2.
    R.Yamada, J. Moeller, M. Wake, “Design Study of 45-mm Bore Dipole Magnet for 11 to 12 T Field” FERMILAB-TM-2082, 23 pp (1999).Google Scholar
  3. 3.
    T. Jaffery, M. Wake, R. Scanlan and P. McIntyre, “Contact Resistance Measurement of Superconducting Strands”, Proc.ICEC16, ppl235-1238, (1997).Google Scholar

Copyright information

© Kluwer Academic/Plenum Publishers, New York 2000

Authors and Affiliations

  • M. Wake
    • 1
  • H. Nakai
    • 1
  • S. Nakayama
    • 1
  • A. Kajita
    • 2
  1. 1.KEK High Energy Accelerator Research OrganizationTsukubaJapan
  2. 2.Nittobo Glass Fiber LaboratoryGonome, FukushimaJapan

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