Inorganic and Hybrid Insulation Materials for ITER

  • James B. Schutz
  • Richard P. Reed
Part of the An International Cryogenic Materials Conference Publication book series (ACRE, volume 40)


Insulation systems are a critical component in superconducting fusion magnet systems, such as the International Thermonuclear Experimental Reactor (ITER). Past cryogenic magnet systems have often relied on organic composite (e.g., glass/epoxy) materials for insulation. Concerns regarding reliability, radiation resistance, and electrical properties of organic systems have prompted the search for alternate materials, particularly hybrids which incorporate an inorganic barrier. Fabricability, mechanical, and electrical performance of various inorganic and hybrid materials are investigated. Materials include mica based sheets, plasma-sprayed and porcelain-enamel ceramic coatings, polyimide films and coatings, reinforced cement, and polymer conversion ceramic prepregs. Radiation resistance of selected candidate material systems will be evaluated in subsequent investigations.


Shear Strength Ceramic Coating Glass Fabric Polyimide Film International Thermonuclear Experimental Reactor 
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  1. 1.
    R. Poelchen, E.Salpietro, M. Vassiliadis, J. Rauch, F. Koenig, G. Claudet, J.N. Chabert, J.Marangos, E. Kraehing, M. Soell, The mechanical strength of irradiated electric insulation, Adv. Cryo. Eng.Matls., 36: 893 (1990)Google Scholar
  2. 2.
    P. Bruzzone, K. Nylund, WJ. Muster, Electrical insulation system for superconducting magnets according to the wind and react technique, Adv. Cryo. Eng. Mat. 36: 999 (1990)Google Scholar
  3. 3.
    N.J. Simon, R.P. Reed, R.P. Walsh, Compression and shear tests of vacuum-impregnated composites at cryogenic temperatures, Adv. Cryo. Eng. Mat. 38: 363 (1992)Google Scholar
  4. 4.
    J.B. Schutz, J.B. Darr, R.P. Reed, Dielectric strength of candidate ITER insulation materials, ICMC Proceedings (1993)Google Scholar
  5. 5.
    R.D. Blake, F.D. Gac, R.J. Grieggs, Radiation-resistant encapsulation for electromagnet field coils, Cer. Bull, 64: 8 (1985)Google Scholar
  6. 6.
    P.E. Fabian, J.B. Schutz, C.S. Hazelton, Properties of candidate ITER vacuum impregnation and prepreg insulation systems, ICMC Proceedings (1993)Google Scholar
  7. 7.
    R.P. Reed, J.B. Darr, J.B. Schutz, Short-beam shear testing of candidate magnet insulations, Cryogenics, 32: 9 (1992)CrossRefGoogle Scholar
  8. 8.
    F.W. Clinard, Jr., The effect of irradiation-induced defects on fusion reactor ceramics, Cryst. Latt. Def. and Amorph. Mat., 14: 241 (1987)Google Scholar
  9. 9.
    D.B. Marshall, M.R. James, J.R. Porter, Structural and mechanical property changes in toughened magnesia-partially stabilized zirconia at low temperatures, J. Am. Ceram. Soc. 72: 218 (1989)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • James B. Schutz
    • 1
  • Richard P. Reed
    • 2
  1. 1.Composite Technology Development, Inc.BoulderUSA
  2. 2.Cryogenic Materials, Inc.BoulderUSA

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