Hard-on-Hard (Ceramic) Long-Life Seals and Riders for Cryogenic Coolers.

Abstract

A reciprocating pin-on-plate apparatus was designed and constructed for the testing of friction and wear characteristics of ceramic materials. The machine was specifically constructed to conduct tests at cryogenic temperatures in a pressurized (300 psig maximum) helium atmosphere. Cryogenic testing was not accomplished but 17 ceramic materials were screened at room temperature in 15 psig helium. As a result of the screening tests, the materials were rank ordered according to their wear, and friction coefficients were tabulated. Several ceramics performed as well or better than fluorogold, a currently used seal material. Recommendations were made concerning additional materials to be tested and the materials characterizations needed for data analysis. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1981
Accession Number
ADA108646

Entities

People

  • Alan I. West
  • Forest J. Carignan

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Ceramic Materials
  • Cermets
  • Chemical Synthesis
  • Chemistry
  • Control Systems
  • Friction
  • Internal Combustion Engines
  • Lubricants
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Silicon Carbide
  • Wear Resistance

Readers

  • Electrical Engineering
  • Reinforced Composite Materials
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).