Accession Number:

AD0823185

Title:

PRACTICAL GALVANIC SERIES

Descriptive Note:

Corporate Author:

ARMY MISSILE COMMAND REDSTONE ARSENAL AL SYSTEMS RESEARCH DIRECTORATE

Personal Author(s):

Report Date:

1967-10-10

Pagination or Media Count:

44.0

Abstract:

The prime objective of this work was the development of a practical galvanic series of metals and alloys to aid in the selection of compatible materials for missile systems. This was accomplished by studying the various metals and alloys coupled with a 110 copper alloy standard as the reference electrode, and monitoring potentials with a self-balancing potentiometric-type recorder. Each couple was partially immersed in a 5-percent salt sodium chloride solution. The effects of coatings and platings on the galvanic relationships existing between metals and alloys were also studied. Coatings and platings were studied with aluminum, magnesium, and steel as the substrates. Other studies included the effects on galvanic activity when strength levels within the same alloy were varied, current versus weight-loss measurements, and the comparison of other conducting solutions with the 5-percent sodium chloride solution used in the generation of this series. The study of the effect of strength level on galvanic activity showed that galvanic potentials can exist between specimens of the same alloy at different strength levels. Also, the galvanic potential varies with different conducting solutions. Author

Subject Categories:

  • Physical Chemistry
  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE