Formation and dissolution of the anodic oxide film on zirconium in alcoholic aqueous solutions

Journal Article · Sun Oct 01 04:00:00 EDT 1995 · Corrosion

DOI:https://doi.org/10.5006/1.3293551· OSTI ID:131406

Mogoda, A S ^[1]

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1. Cairo Univ., Giza (Egypt). Dept. of Chemistry

The dissolution behavior of the anodic oxide film formed in alcoholic aqueous solutions was studied. Results indicated the dissolution mechanism of the duplex oxide film followed a zero-order rate equation. The increase in methanol concentration in the formation medium (phosphoric acid [H{sub 3}PO{sub 4}]) resulted in formation of an oxide film that incorporated little phosphate ion and that dissolved at a low rate. The dissolution rate of the oxide film decreased with increasing methanol concentration in the dissolution medium. This was attributed to the increase in the viscosity of the medium, which led to a decrease in the diffusion coefficient of the dissolution product of the zirconium oxide film. Dissolution of the anodic oxide film also was investigated as a function of the chain length of alcohols.

• Sponsoring Organization: USDOE
• OSTI ID: 131406
• Journal Information: Corrosion, Journal Name: Corrosion Journal Issue: 10 Vol. 51; ISSN 0010-9312; ISSN CORRAK
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANODIZATION
CORROSION
DIFFUSION
DISSOLUTION
EXPERIMENTAL DATA
METHANOL
OXIDES
PHOSPHORIC ACID
PROPANOLS
SULFURIC ACID
VISCOSITY
ZIRCONIUM