THE APPLICATION OF GALLIUM ALLOYS IN LIQUID SLIDING CONTACTS

Abstract

The mercury and sodium-potassium usually used in liquid sliding contacts have serious drawbacks. The low-melting alloys with a Ga base are of prospective interest and were found to have considerable advantages with respect to mercury or sodium-potassium contacts. The tested Ga alloy has a wide temperature range of liquid state, a low electric resistance (2/7 as low as Hg and approx. 3/4 as low as Na-K). It is stable in air up to 500C and has a low vapor pressure. The friction losses are considerably lower than those in Hg sliding contacts, but 4.5 times higher than in Na-K contacts. The contact potential drop is lower than both in the Hg and Na-K contacts.

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Document Details

Document Type
Technical Report
Publication Date
Oct 29, 1968
Accession Number
AD0684045

Entities

People

  • D. V. Loshkin
  • G. N. Perelshteyn
  • S. P. Yatsenko

Organizations

  • National Air and Space Intelligence Center

Tags

Communities of Interest

  • Human Systems

DTIC Thesaurus Topics

  • Alloys
  • Centrifugal Force
  • Chemistry
  • Current Density
  • Electrical Insulation
  • Electrical Resistance
  • Friction
  • Gallium
  • Gallium Alloys
  • Materials
  • Metals
  • Potassium
  • Potassium Alloys
  • Resistance
  • Sliding
  • Sliding Contacts
  • Vapor Pressure

Fields of Study

  • Materials science

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Superconducting Magnet Technology
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).

Technology Areas

  • Microelectronics