publication . Article . Conference object . 1998

Sealing of Anodized Aluminum Alloys with Rare Earth Metal Salt Solutions

Mansfeld, F.; Chen, C.; Carmel Breslin; Dull, D.;
  • Published: 01 Jan 1998
  • Country: Ireland
Abstract
Boric-sulfuric acid anodized (BSAA) aluminum alloys have been sealed in hot solutions of cerium or yttrium salts. For comparison, sealing has also been performed in the presently used dilute chromate solution, boiling water, and a cold nickel fluoride solution. The corrosion resistance of the sealed BSAA Al alloys Al 2024, Al 6061, and Al 7075 has been evaluated by recording impedance spectra during exposure in 0.5 N NaCl for 7 days. Shorter or longer exposure times have also been used depending on the corrosion resistance obtained by different sealing processes. From the impedance spectra the time dependence O the pore resistance, R po and the specific admittan...
Subjects
free text keywords: Renewable Energy, Sustainability and the Environment, Electrochemistry, Materials Chemistry, Electronic, Optical and Magnetic Materials, Surfaces, Coatings and Films, Condensed Matter Physics, Anodizing, Chromate conversion coating, Oxide, chemistry.chemical_compound, chemistry, Corrosion, Yttrium, chemistry.chemical_element, Inorganic chemistry, Aluminium, Cerium nitrate, Cerium
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