Mechanical and electric characteristics of vacuum impregnated no-insulation HTS coil

Park, Heecheol; Arong, Kim; Kim, Seokho; Park, Minwon; Kim, Kwangmin; Park, Taejun

doi:10.1016/j.physc.2014.04.010

Cited by 11 publications

(1 citation statement)

References 6 publications

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“…The radial stress received by the impregnated coil was generally transverse tensile stress within 10 MPa. Considering the delamination strength of the copper laminated REBCO conductor used in the study, this value of tensile stress seems to be small [42]. Thus, the delamination problem did not happen to the conductor layer when the HTS coils were impregnated with IR-3, CTD-101K, and MY750.…”

Section: Thermal Cycle Testsmentioning

confidence: 94%

Performance study of a new epoxy resin IR-3 in HTS-based high-field magnet application

Yao¹,

Zhang²,

Wang³

et al. 2022

Mater. Res. Express

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REBCO (Rare-earth-based barium copper oxide) conductors are appropriate materials for high-field magnet applications. Vacuum impregnation using epoxy resin is a technique widely used for stable operation of superconducting coils. However, epoxy-impregnated REBCO coils often experience critical current degradation problems. Finding a suitable impregnating material for REBCO coils is important for their application in high-field superconducting magnets. A new toughness epoxy, IR-3, was developed recently. An in-depth understanding of IR-3 on the performance of REBCO coils is critically necessary for its application. Thus, this paper explores the effects of IR-3 impregnation on the performance of REBCO coils at 77 K and 4.2 K. The test results are compared to similar coils impregnated with CTD-101 K and MY750. Meanwhile, the radial stresses at 77 K in self-field and 4.2 K under 10 T were simulated. All epoxy impregnated REBCO coils showed no decay in critical current after thermal cycles at 77 K. When charged at 4.2 K in external fields of 5 T and 10 T, the IR-3 impregnated REBCO coils avoided performance degradation problems and had superior electrical stabilities. Combing the excellent performance at low temperatures, IR-3 is a promising candidate material for impregnating high-field REBCO coils.

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Section: Thermal Cycle Testsmentioning

confidence: 94%