Accession Number : AD0436100


Title :   THE DISSOLUTION OF DEFORMED MAGNESIUM IN SULFURIC ACID,


Corporate Author : MISSOURI SCHOOL OF MINES AND METALLURGY ROLLA


Personal Author(s) : James,W J ; Straumanis,M E ; Daniels,W J


Report Date : Mar 1964


Pagination or Media Count : 16


Abstract : A study has been made of the effect of the deformation of pure polycrystalline magnesium undergoing anodic dissolution in sulfuric acid. In 0.05 and 0.10 N H2SO4' deviations from linearity in anodic dissolution rate versus current density plots occur at approximately 18 and 40 ma/sq. cm. Examination of the metal surfaces following dissolution reveals a black to gray film (probably containing dispersed metallic particles) forming above and in the region of these current densities. The maximum points in the difference effect, delta, curves for deformed metal anodically dissolving in 0.05 and 0.10 N H2 SO4 are found at approximately 14 and 38 ma/sq. cm. respectively. These results appear to confirm previous studies attributing the maximum and the subsequent decrease in delta primarily to increased anodic disintegration. It would appear that the deformation of the metal does not play a significant role in the mechanism of anodic disintegration. (Author)


Descriptors :   *METAL CRYSTALS , SOLVATION , MAGNESIUM , SULFURIC ACID , SOLUBILITY , DEFORMATION , SURFACE PROPERTIES , HYDROGEN


Distribution Statement : APPROVED FOR PUBLIC RELEASE