Accession Number:

AD0611992

Title:

POLARIZATION STUDIES OF ALUMINUM ALLOYS IN WATER AT 200 C AND 300 C,

Descriptive Note:

Corporate Author:

NAVAL RESEARCH ESTABLISHMENT DARTMOUTH (NOVA SCOTIA)

Personal Author(s):

Report Date:

1962-05-08

Pagination or Media Count:

12.0

Abstract:

Polarization studies on aluminum samples corroding in pure water at high temperature show that the oxide film on 2S aluminum has different properties than that on special alloys containing iron and nickel. The property affected most significantly is the electronic resistance of the film. While the film on 2S has a much greater electronic resistance in the anodic direction it has about the same or less resistance in the cathodic direction. The alloying elements appear to decrease the energy required for promoting electrons from the valence band of the oxide to the conducting band, giving the alloys their lower electronic resistance at current densities above 0.056 masq cm. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE