Advertisement

Materials pp 405-411 | Cite as

Friction and Wear of Radiation Resistant Composites, Coatings and Ceramics in Vacuum and Low Temperature Environment

  • A. Lipski
  • M. Ruschman
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 38)

Abstract

Superconducting magnets used in accelerators such as the Superconducting Super Collider (SSC) are exposed to fast neutron and gamma irradiation. Some of the components used in the SSC cryostat are fabricated from organic materials with low radiation resistance. The slide bearing material presently supporting the magnet assembly contains Teflon and must be replaced with a material of improved radiation resistance. A group of sliding materials, most of which have suitable radiation resistance, were tested under conditions of pressure, temperature, velocity, and vacuum typically encountered in normal cryostat operation. As this was a preliminary screening test, the samples were only cooled to liquid nitrogen temperature. The group of materials tested consists of composites, coated base metals, and ceramics. The criteria was to maintain a low coefficient of friction throughout the experiment in spite of changes in temperature and vacuum. Subsequent tests will expose finalist materials to fast neutron irradiation at liquid helium temperatures. This paper describes the experimental setup and presents data of the friction coefficient measurements taken for the various samples.

Keywords

Stainless Steel Plate Composite Group Fast Neutron Irradiation Magnet Assembly Cold Mass 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    DuPont, `Radiation Tolerance of Teflon Resins,“ January - February 1969 issue of The Journal of Teflon.Google Scholar

Copyright information

© Springer Science+Business Media New York 1992

Authors and Affiliations

  • A. Lipski
    • 1
  • M. Ruschman
    • 1
  1. 1.Fermi National Accelerator LaboratoryBataviaUSA

Personalised recommendations