Wear and Friction of Impregnated Carbon Seal Materials in Liquid Nitrogen and Hydrogen

  • D. W. Wisander
  • R. L. Johnson
Conference paper
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 6)

Abstract

The most effective dynamic seals for cryogenic fluids require slider materials for solid contact. The seal material should provide inherently low friction and low wear since cryogenic liquids are not capable of effective boundary lubrication [1]. Mechanical carbons (those made for applications involving mechanical stress) are most commonly used as nose pieces for seals. The carbon compositions are usually considered capable of self-lubrication, in liquid nitrogen and in liquid hydrogen, however, the wear of carbons is rapid [1,2] and may result in a service life of less than 1% of that expected with water or lubricants. In gaseous nitrogen or dry air, the problem may be more critical than in a cryogenic liquid since the liquid is an effective sink for the removal of frictional heat [3].

Keywords

Friction Coefficient Graphitic Carbon Liquid Hydrogen Metal Fluoride Seal Material 
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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References

  1. 1.
    D. W. Wisander, W. F. Hady, and R. L. Johnson, Friction Studies of Various Materials in Liquid Nitrogen, NACA TN 4211 (1958).Google Scholar
  2. 2.
    D. W. Wisander and R. L. Johnson, Wear and Friction of Possible Seal and Bearing Materials for Liquid Hydrogen, NASA TO (in process) (1960).Google Scholar
  3. 3.
    D. W. Wisander, C. E. Maley, and R. L. Johnson, “Wear and Friction of Filled Polytetrafluoroethylene Compositions in Liquid Nitrogen,” ASLE Transactions, Vol. 2, No, 1, pp. 58–66 (April, 1959).CrossRefGoogle Scholar
  4. 4.
    E. E. Bisson, R. L. Johnson, and W. J. Anderson, “Friction and lubrication with Solid Lubricants at Temperatures to 1000° F with Particular Reference to Graphite,” Proceedings, Institute of Mechanical Engineers Conference on Lubrication and Wear, pp, 348–354 (1957).Google Scholar
  5. 5.
    H.M. Elsey, “Treatment of High-Altitude Brushes by Application of Metallic Halides, Electrical Engineering,” (Transactions). Vol. 64, No. pp. 576–579 (Aug., 1945).Google Scholar
  6. 6.
    D. W. Wisander and R. L. Johnson, “A Solid Film Lubricant Composition for Use at High Sliding Velocities in Liquid-Nitrogen,” Paper presented at the 1960 Annual Meeting American Society of Lubrication Engineers, Cincinnati, Ohio, April 1960 (Approved for publication in ASLE Transactions).Google Scholar

Copyright information

© Springer Science+Business Media New York 1961

Authors and Affiliations

  • D. W. Wisander
    • 1
  • R. L. Johnson
    • 1
  1. 1.Lewis Research CenterNational Aeronautics and Space AdministrationClevelandUSA

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