Turn-to-turn friction enhancement in high-temperature superconducting coils for mechanical stability under lorentz force
High-temperature superconducting coils subjected to ultra-high magnetic fields undergo mechanical deformation due to the Lorentz force generated by the magnetic field. Recent attempts to prevent this deformation have proposed the use of overbanding technology, which entails surrounding the outermost...
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IOP Publishing
2025-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/adb667 |
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| author | Hyun Sung Noh Younghoon Kim Minkyu Sun Jungmin Kim Jongsung Lee Kihong Kim Vijayakumar Elayappan Mohamed Mussa Mtangi Wonseok Jang Seungyong Hahn Haigun Lee |
| author_facet | Hyun Sung Noh Younghoon Kim Minkyu Sun Jungmin Kim Jongsung Lee Kihong Kim Vijayakumar Elayappan Mohamed Mussa Mtangi Wonseok Jang Seungyong Hahn Haigun Lee |
| author_sort | Hyun Sung Noh |
| collection | DOAJ |
| description | High-temperature superconducting coils subjected to ultra-high magnetic fields undergo mechanical deformation due to the Lorentz force generated by the magnetic field. Recent attempts to prevent this deformation have proposed the use of overbanding technology, which entails surrounding the outermost turn of the coil with a high-strength material such as stainless steel, as an optimal alternative. However, the disadvantage of overbanding in terms of thermal/electrical protection of the coil has been emphasized because the stainless steel surrounding the coil reduces the operating efficiency of the coil by preventing the dissipation of joule heat and current when quenched. In this study, our approach to prevent the deformation of the coil without applying such overbanding was to intentionally abrade the surface of the high-temperature superconducting tape using sandpaper with different friction coefficients. This enabled us to fabricate coils with different turn-to-turn friction forces, which prevented the deformation of the coil by using the turn-to-turn friction force generated by the abrasion. The electromechanical tests we performed on the coil in a liquid nitrogen bath (77 K) confirmed that, compared to the coil without surface treatment, the coils fabricated by abrading the surfaces of the high-temperature superconducting tape exhibited decreased deformation even when the same Lorentz force was applied. |
| format | Article |
| id | doaj-art-a37e7a8ef64c4568a45d07e2ff9ba9dd |
| institution | OA Journals |
| issn | 2053-1591 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj-art-a37e7a8ef64c4568a45d07e2ff9ba9dd2025-08-20T02:15:34ZengIOP PublishingMaterials Research Express2053-15912025-01-0112202600210.1088/2053-1591/adb667Turn-to-turn friction enhancement in high-temperature superconducting coils for mechanical stability under lorentz forceHyun Sung Noh0https://orcid.org/0000-0003-4509-7769Younghoon Kim1https://orcid.org/0009-0004-4613-2313Minkyu Sun2Jungmin Kim3https://orcid.org/0009-0009-2330-2785Jongsung Lee4https://orcid.org/0009-0006-5851-8234Kihong Kim5Vijayakumar Elayappan6Mohamed Mussa Mtangi7Wonseok Jang8https://orcid.org/0009-0008-9815-6949Seungyong Hahn9https://orcid.org/0000-0002-4511-4162Haigun Lee10https://orcid.org/0000-0003-3448-7817Department of Materials Science and Engineering, Korea University , Seoul, 02841, KoreaDepartment of Materials Science and Engineering, Korea University , Seoul, 02841, KoreaDepartment of Materials Science and Engineering, Korea University , Seoul, 02841, KoreaDepartment of Materials Science and Engineering, Korea University , Seoul, 02841, KoreaDepartment of Materials Science and Engineering, Korea University , Seoul, 02841, KoreaDepartment of Materials Science and Engineering, Korea University , Seoul, 02841, KoreaDepartment of Materials Science and Engineering, Korea University , Seoul, 02841, KoreaDepartment of Physics, University of Dar es Salaam , Dar es Salaam, 35063, TanzaniaDepartment of Electrical and Computer Engineering, Seoul National University , Seoul, 08826, KoreaDepartment of Electrical and Computer Engineering, Seoul National University , Seoul, 08826, KoreaDepartment of Materials Science and Engineering, Korea University , Seoul, 02841, KoreaHigh-temperature superconducting coils subjected to ultra-high magnetic fields undergo mechanical deformation due to the Lorentz force generated by the magnetic field. Recent attempts to prevent this deformation have proposed the use of overbanding technology, which entails surrounding the outermost turn of the coil with a high-strength material such as stainless steel, as an optimal alternative. However, the disadvantage of overbanding in terms of thermal/electrical protection of the coil has been emphasized because the stainless steel surrounding the coil reduces the operating efficiency of the coil by preventing the dissipation of joule heat and current when quenched. In this study, our approach to prevent the deformation of the coil without applying such overbanding was to intentionally abrade the surface of the high-temperature superconducting tape using sandpaper with different friction coefficients. This enabled us to fabricate coils with different turn-to-turn friction forces, which prevented the deformation of the coil by using the turn-to-turn friction force generated by the abrasion. The electromechanical tests we performed on the coil in a liquid nitrogen bath (77 K) confirmed that, compared to the coil without surface treatment, the coils fabricated by abrading the surfaces of the high-temperature superconducting tape exhibited decreased deformation even when the same Lorentz force was applied.https://doi.org/10.1088/2053-1591/adb667lorentz forcecoil deformationmechanical stabilityfriction forcecharacteristic resistance |
| spellingShingle | Hyun Sung Noh Younghoon Kim Minkyu Sun Jungmin Kim Jongsung Lee Kihong Kim Vijayakumar Elayappan Mohamed Mussa Mtangi Wonseok Jang Seungyong Hahn Haigun Lee Turn-to-turn friction enhancement in high-temperature superconducting coils for mechanical stability under lorentz force Materials Research Express lorentz force coil deformation mechanical stability friction force characteristic resistance |
| title | Turn-to-turn friction enhancement in high-temperature superconducting coils for mechanical stability under lorentz force |
| title_full | Turn-to-turn friction enhancement in high-temperature superconducting coils for mechanical stability under lorentz force |
| title_fullStr | Turn-to-turn friction enhancement in high-temperature superconducting coils for mechanical stability under lorentz force |
| title_full_unstemmed | Turn-to-turn friction enhancement in high-temperature superconducting coils for mechanical stability under lorentz force |
| title_short | Turn-to-turn friction enhancement in high-temperature superconducting coils for mechanical stability under lorentz force |
| title_sort | turn to turn friction enhancement in high temperature superconducting coils for mechanical stability under lorentz force |
| topic | lorentz force coil deformation mechanical stability friction force characteristic resistance |
| url | https://doi.org/10.1088/2053-1591/adb667 |
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