THE DISSOLUTION AND DIFFUSION OF OXYGEN IN ZIRCONIUM

Technical Report · Sat May 15 04:00:00 EDT 1965

OSTI ID:4606403

Doerffler, W W

Measurement of the diffusion coefficients of oxygen in {alpha}-zirconium by two methods have confirmed the results of Pemsler (for measurements of the dissolution rates of anodic oxides) and the results of Davis (by microhardness measurements on specimens from prolonged thermal oxidation). Repeated dissolution of anodic films and dissolution of thin thermal films gave higher values for the diffusion coefficient and suggested that this may be a function of the oxygen content. Oxidation in air gave anomalous microhardness curves showing a much longer 'tail' than expected from the rate of oxygen diffusion. This may be indicative of some interaction between oxygen and nitrogen, with nitrogen diffusing ahead of the oxygen gradient. In the absence of oxygen, the diffusion coefficient for nitrogen is much smaller than that for oxygen. (auth)

• Research Organization: Atomic Energy of Canada Ltd., Chalk River, Ontario (Canada)
• NSA Number: NSA-19-044673
• OSTI ID: 4606403
• Report Number(s): AECL-2268
• Country of Publication: Canada
• Language: English

Related Subjects

ALLOTROPY
ANODES
CHEMICAL REACTIONS
DIAGRAMS
DIFFUSION
FILMS
HARDNESS
METALS, CERAMICS, AND OTHER MATERIALS
NITROGEN
OXIDES
OXYGEN
Properties and Structure
TEMPERATURE
ZIRCONIUM
ZIRCONIUM-ALPHA