Accession Number : ADA331092

Title :   Chemistry, Structure and Morphology of Native and Passive Oxide Films on Aluminum Rich Amorphous Al-Fe-Ce Alloys.

Descriptive Note : Conference proceedings,

Corporate Author : NAVAL SURFACE WARFARE CENTER SILVER SPRING MD

Personal Author(s) : Mansour, A. N. ; Melendres, C. A.

PDF Url : ADA331092

Report Date : 23 JUN 1994

Pagination or Media Count : 18

Abstract : Aluminum based metallic glasses are of technological importance due to their high strength, low density, and anticipated high resistance to corrosion. We report on the corrosion characteristics such as corrosion potentials, corrosion currents, and pitting potentials of melt-spun ribbons of Al(90)Fe(10-x)Ce(x) (x = 3,5,7). In addition, we have examined the chemistry, structure, and morphology of the native and passive oxide films using X-ray Absorption Fine Structure Spectroscopy, X-ray Photoelectron Spectroscopy and Scanning Electron Microscopy. Passive oxide films were induced by anodizing below the pitting potential in an aqueous solution of 0.9 wt% NaCl for 30 and 60 minutes using potentiodynamic polarization techniques.

Descriptors :   *SYMPOSIA, *ALUMINUM ALLOYS, *CORROSION RESISTANCE, SCANNING ELECTRON MICROSCOPES, MICROSTRUCTURE, PASSIVE SYSTEMS, AMORPHOUS MATERIALS, OXIDES, X RAY PHOTOELECTRON SPECTROSCOPY.

Subject Categories : Properties of Metals and Alloys
      Test Facilities, Equipment and Methods
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE