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Materials pp 429-435 | Cite as

Friction and Wear of a Three-Dimensional Fabric-Reinforced Plastic at Room Temperature and Liquid Nitrogen Temperature

  • S. Nishijima
  • T. Okada
  • P. C. Michael
  • Y. Iwasa
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 38)

Abstract

The friction and wear characteristics for copper slid against ZI-005, a newly-developed, three-dimensional-fabric-reinforced plastic, were examined at room temperature (300 K) and at liquid nitrogen temperature(77 K) to determine its suitability for use in cryogenically-cooled electromagnets. For comparison, the friction and wear characteristics for copper slid against G-10, a conventional two-dimensional-fabric-reinforced plastic,were also measured. The friction coefficient for the copper/G-10 pair increased markedly with sliding distance at 300K, achieving a steady-state value of 0. 75; at 77K the friction coefficient is much lower, ~0. 3, and relatively independent of distance. By contrast, the friction coefficient for copper/ZI-005 is equal to ~0. 5, independent of both sliding distance and temperature. The magnitude of the nondimensional wear coefficients for copper/ZI-005 are equal to ~10−4, independent of temperature, and are approximately 100 times greater than those for copper/G-10(~10−6). The magnitude of these wear coefficients, together with an examination of the composites’ surface morphologies, suggest that the surface interactions for copper/ZI-005 are predominantly abrasive, whereas the interactions for copper/G-10 are generally adhesive. Because of its tendency towards abrasive friction, ZI-005 should provide a much stabler friction behavior when used as an insulator between highly-stressed copper windings.

Keywords

Friction Coefficient Wear Scar Adhesive Wear Wear Characteristic Frictional Behavior 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1992

Authors and Affiliations

  • S. Nishijima
    • 1
  • T. Okada
    • 1
  • P. C. Michael
    • 2
  • Y. Iwasa
    • 2
  1. 1.ISIR Osaka UniversityIbaraki OsakaJapan
  2. 2.FBNML MITCambridgeUSA

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