Abstract
The oxidation kinetics of Titanium alloys containing nominally 5, 40, and 60 weight percent Ta were measured for 16 hr in nitrogen-20% oxygen. In all three alloys at each temperature tested oxidation rates in the nitrogen-oxygen mixture were significantly lower than those previously measured in argon-20% oxygen or pure oxygen. Using X-ray diffraction and electron microprobe a nitrogen rich layer was identified in the scale near the scale/metal interface. This layer apparently acts as an oxygen-diffusion barrier, as demonstrated by the reduced depth of oxygen penetration in the metal relative to identical specimens oxidized in nitrogen free atmospheres.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
R. J. Hanrahan, Jr. and D. P. Butt,Oxid. of Met. 47, 314 (1997).
Y. S. Chen and C. J. Rosa,Oxid. of Met. 14, 167 (1980).
R. J. Hanrahan Jr., Y. C. Lu, D. P. Butt, and H. Kung,A Study of Nitride Formation in the Oxidation of Titanium-Tantalum Alloys. Proceedings of the Conference Microscopy of Oxidation III, S. B. Newcomb and J. A. Little, eds., 427-35, Institute of Materials, 1997.
J. Stringer,Oxid. of Met. 11, 225 (1977).
R. F. Voytovichand E. I. Golovko,Russian Metallurgy-USSR 1, 183 (1979).
E. J. Felten,J. Less Common Metals 17, 185 (1969).
Y. S. Chen and C. J. Rosa,Oxid. Met. 14, 147 (1980).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Hanrahan, R.J., Butt, D.P. The effects of nitrogen on the kinetics and mechanisms of oxidation of Titanium-Tantalum alloys. Oxid Met 48, 41–58 (1997). https://doi.org/10.1007/BF01675261
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01675261