Accession Number : AD0664485

Title :   A RADIOCHEMICAL INVESTIGATION OF THE LEACHING OF CHROMIUM FROM CHEMICALLY CHROMATED ALUMINUM ALLOY SURFACES. PART III. THE 'UPTAKE' OF THE CHLORIDE ION INTO SUCH SURFACES,

Corporate Author : NAVAL AIR DEVELOPMENT CENTER JOHNSVILLE PA AERO MATERIALS DEPT

Personal Author(s) : Glass,A. L.

Report Date : 23 AUG 1967

Pagination or Media Count : 23

Abstract : Radioactive tracer procedures are used to investigate the leaching characteristics of chromium dissolving from chromated aluminum surfaces to which an organic protective coating was applied during the aging process and which was removed prior to immersion in the salt solution. A radioactive tracer procedure is described to determine the chloride ion 'uptake' by chromated aluminum surfaces when immersed in salt solutions. Data are presented showing the effects of film thickness, aging periods and time of immersion in salt solution on the solution of chromium from the chromated surfaces and on the 'uptake' of chloride ions by these films. (Author)

Descriptors :   (*ALUMINUM, CORROSION INHIBITION), (*CHROMATES, COATINGS), (*CHROMIUM, DIFFUSION), TRACER STUDIES, CHLORIDES, SOLVENT EXTRACTION, DECOMPOSITION, FILMS, PROTECTIVE TREATMENTS

Subject Categories : Radiation and Nuclear Chemistry
      Coatings, Colorants and Finishes
      Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE