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Tribological properties of chromium-plated niobium-titanium(3)-tin superconducting wire in liquid helium.

[In Japanese. / En japonais.]

Author(s) : IWABUCHI A., ARAI H., SHIMIZU T., NOTO K., HAMAJIMA T., ONO M.

Type of article: Article

Summary

Superconducting wires in a cable-in-conduit conductor are plated with chromium for reducing alternating current loss. However, the wire will suffer from fretting motion with a very small slip amplitude by the repeated pulse operation of the coil, which would damage the plated layer. In the paper, tribological properties, ie, frictional and wear properties, were examined under a crossed-cylinder contact at mainly 4.2 K in liquid helium. The significant damage was the plastic deformation of the plated layer in the wear scar at 4.2 K. However, the plated layer was broken and separated at the boundary of the wear scar. The cracks propagated from the circumferential cracks existing before the test.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1994-2744
  • Languages: Japanese
  • Source: Cryogenics/ Cryog. Eng. - vol. 28 - n. 11
  • Publication date: 1993
  • Document available for consultation in the library of the IIR headquarters only.

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