A Sol-Gel Approach to the Insulation of Rutherford Cables

Journal Article · Mon Jun 28 00:00:00 EDT 2004 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1774579· OSTI ID:20653220

Buta, F ^[1]; Hascicek, Y S; Arda, L; Aslanoglu, Z; Akin, Y ^[2]; Sumption, M D; Collings, E W ^[3]

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1. Global Research and Development, Inc., Columbus, Ohio, 43210 (United States)
2. National High Magnetic Field Laboratory, Tallahassee, Florida, 32310 (United States)
3. LASM, MSE, Ohio State University, Columbus, Ohio, 43210 (United States)

Two wind-and-react compatible variants for the electrical insulation of Rutherford cables by a sol-gel route have been investigated. The first variant involves the direct application of a sol-gel coating of SnO2-ZrO2 to the surface of the strands in the cable, whereas the second is an indirect approach consisting of coating stainless steel tapes with MgO-ZrO2 that are to be wrapped around or co-wound with the cable. Following the application of the insulation by one of the two methods, the insulation electrical resistance and breakdown voltage were determined for samples consisting of two 7 inches long cables pressed together and vacuum impregnated with epoxy (CTD-101K). With a notable exception, the breakdown voltages on directly insulated cables were too low for practical purposes. Better results, with breakdown voltages ranging from 20 to almost 200 V, were obtained for insulator coatings applied to stainless steel tapes. An additional sintering at 700-800 deg. C for 6-12h of the coatings deposited on stainless steel was found to increase the breakdown voltage.

• OSTI ID: 20653220
• Journal Information: AIP Conference Proceedings, Vol. 711, Issue 1; Conference: CEC 2003: Cryogenic engineering and international cryogenic materials conference on advances in cryogenic engineering, Anchorage, AK (United States), 22-26 Sep 2003; Other Information: DOI: 10.1063/1.1774579; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BREAKDOWN
CABLES
CERAMICS
COATINGS
ELECTRIC POTENTIAL
ELECTRICAL INSULATION
MAGNESIUM OXIDES
SINTERING
SOL-GEL PROCESS
STAINLESS STEELS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0400-1000 K
TEMPERATURE RANGE 1000-4000 K
TIME DEPENDENCE
TIN OXIDES
ZIRCONIUM OXIDES