High temperature superconducting current leads for cryogenic apparatus

Hull, J.R.

doi:10.1016/0011-2275(89)90287-7

Cited by 78 publications

(13 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[1][2][3][4][5] We have been studying a superconducting bushing apparatus which is composed of long and slender HTS rods or pipes for the current leads and for the external magnetic shielding. 4,5 Abe et al in our group developed a simple fabricating method of fine HTS rods 6 or pipes 7 in the Bi-SrCa-Cu-O ͑BSCCO͒ system by using a glass-ceramic processing, which involves casting of the melt in low viscosity and reheating the forming product.…”

Section: Nagoya Institute Of Technology Gokiso-cho Showa-ku Nagoyamentioning

confidence: 99%

Direct jointing of Ba–Sr–Ca–Cu–O superconducting glass-ceramics by welding

Kasuga

Nakamura

Abe

et al. 1995

Applied Physics Letters

View full text Add to dashboard Cite

Superconducting glass-ceramics in the Bi–Sr–Ca–Cu–O (BSCCO) system were found to be successfully joined together by welding with an LNG-O2 flame. Two edge portions of the glass- ceramics to be joined were set in close contact to each other and melted by the high-temperature flame. After the welding, the joined portion was annealed with a soft flame, so that no crack formed in the product. The directly joined product was converted into a superconductor with Tc≂90 K by a postheating at ∼830 °C. Its critical current density Jc, was almost the same as the of the original glass-ceramic. This technique is very important for fabrication of large-sized superconducting apparatus such as current leads or magnetic shields.

show abstract

Section: Nagoya Institute Of Technology Gokiso-cho Showa-ku Nagoyamentioning

confidence: 99%

Direct jointing of Ba–Sr–Ca–Cu–O superconducting glass-ceramics by welding

Kasuga

Nakamura

Abe

et al. 1995

Applied Physics Letters

View full text Add to dashboard Cite

show abstract

“…Hull [16] [19]. Of particular note is that the power supply is a low voltage supply and that the system has low inductance.…”

Section: Magnet Leadsmentioning

confidence: 99%

Potential for use of high-temperature superconductors in fusion reactors

Hull

1992

Journal of Nuclear Materials

View full text Add to dashboard Cite

“…Because the thermal conductivity of YBCO is lower than that of copper, less helium will be lost if a high-Tc superconducting connector is used in place of a copper bus bar extended directly into liquid helium. 26 The reduced power loss due to zero resistance of YBCO should also minimize loss of liquid helium. The connector contains 20 bars, each with an area of 0.46 em 2 and a length of 9 em.…”

Section: Pressed Componentsmentioning

confidence: 99%

Fabricating polycrystalline high-Tc superconductors

Lanagan

Dorris

Singh

et al. 1990

JOM

View full text Add to dashboard Cite

Many applications of high-temperature superconductors require the ability to carry large currents in high magnetic fields. Electrical properties of single crystals and thin films offer hope that suitable electrical properties will be obtained in polycrystalline materials. Novel microstructures can be produced by melt-recrystallization processes that can be characterized by oriented crystallites. The large critical current densities required for many applications have been demonstrated by powder-in-tube and melt-texturing processes. There are several competing processes to form bulk polycrystalline materials. Plastic forming techniques, such as extrusion and tape casting, offer the advantage of fabricating long and continuous coils. Nearterm products that operate in low magnetic fields include current leads, shielding devices and high-quality resonant cavities.

show abstract

High temperature superconducting current leads for cryogenic apparatus

Cited by 78 publications

References 27 publications

Direct jointing of Ba–Sr–Ca–Cu–O superconducting glass-ceramics by welding

Direct jointing of Ba–Sr–Ca–Cu–O superconducting glass-ceramics by welding

Potential for use of high-temperature superconductors in fusion reactors

Fabricating polycrystalline high-Tc superconductors

Contact Info

Product

Resources

About