Accession Number:

AD0784159

Title:

Anodic Polarization of Nickel in Alkali Metal Carbonates,

Descriptive Note:

Corporate Author:

ARMY FOREIGN SCIENCE AND TECHNOLOGY CENTER CHARLOTTESVILLE VA

Report Date:

1973-12-24

Pagination or Media Count:

10.0

Abstract:

Anodic polarization of nickel in a molten triple eutectic mixture of alkali metal carbonates was studied at 600-800C. It was shown that the self-diffusion current of nickel is small in a melt of alkali metal carbonates, in the absence of thermal dissociation. At higher current densities, migration of nickel into the melt is accompanied by formation of a film which is difficult to dissolve, of nickel monoxide 600C or a solid solution of Li2O-NiO 800C, which inhibits the process of anode solution of the metal. It was determined that the solid LiO2-NiO film passivates nickel more strongly than the friable nickel monoxide, which retards nickel oxidation negligibly.

Subject Categories:

  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE