Titanium Oxidation During Thermal Treatment: Inhibiting Role of Nitrogen and Epitaxial Orientation Relations Evidenced by EBSD

A neutral gas as an oxidation inhibitor may actually be counter‐productive! This is the surprise bottom line of the authors' investigations on thermal treatment of titanium. The 1 % of oxygen in argon build up an oxide layer which is thicker than when Ti is heated in ordinary air—since the latt...

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Bibliographic Details
Published in:Advanced engineering materials 2003-08, Vol.5 (8), p.587-593
Main Authors: Lenarduzzi, E., Bounie, P., Schuman, C., Philippe, M.-J., Petelot, D.
Format: Article
Language:English
Subjects:
Applied sciences
Corrosion
Corrosion mechanisms
EBSD (electron back scatter diffraction)
Exact sciences and technology
Metals. Metallurgy
Nitrogen
Nitrogen, oxidation inhibition
oxidation inhibition
oxide layers
Titanium
Titanium, oxide layers
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Summary:A neutral gas as an oxidation inhibitor may actually be counter‐productive! This is the surprise bottom line of the authors' investigations on thermal treatment of titanium. The 1 % of oxygen in argon build up an oxide layer which is thicker than when Ti is heated in ordinary air—since the latter contains nitrogen. Nitrogen plays the role of a diffusion barrier as it occupies the octahedral sites preventing oxygen from diffusing into the metal.
ISSN:1438-1656
1527-2648
DOI:10.1002/adem.200300390