Hostname: page-component-77c89778f8-7drxs Total loading time: 0 Render date: 2024-07-18T17:28:04.634Z Has data issue: false hasContentIssue false
  • English
  • Français

Oxide Scale Stresses in Polycrystalune Cu/Cu2O System

Published online by Cambridge University Press:  06 March 2019

N. Jayaraman  and
Partha Rangaswamy
N. Jayaraman
Affiliation:
University of Cincinnati, Cincinnati, OH 45221-0012
Partha Rangaswamy
Affiliation:
LANSCE - Los Alamos National Laboratory, Los Alamos, NM
Get access

Abstract

An x-ray diffraction (sin2ψ) method has been successfully used to measure the oxidation stresses at room temperature in annealed and electropolished samples of polycrystalline Cu coupons of different thickness’ (0.75, 1.25, and 2.25 mm thick) oxidized for 15 and 30 minutes at temperatures 700, 800, and 900° C, Oxide scale stresses are generally a result of both differential Coefficient of Thermal Expansion (CTE) and the Pilling-Bedworth Ratio (PBR). At the oxidation temperatures of this study, the oxide scale consisted of a mixture of both CuO and Cu2O. Residual stress measurements were made in the Cu2O phase. In this system, the average stresses on the free surface of the oxide (<σ11> and <σ22>) were compressive and the average stress through the thickness (<σ22>) normal to the oxide layer was found to be tensile.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 39: Forty-Fourth Annual Conference on Applications of X-ray Analysis, July 31 - August 4, 1995 , 1995 , pp. 421 - 432
Copyright
Copyright © International Centre for Diffraction Data 1995

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

(1) Pilling, N. B. and Bedworth, R. E., Journal of Institute of Metals, Vol. 29, (1923), p 259.Google Scholar
(2) Conference on “Mechanical properties and adherence of scale layers and their influence on the oxidation of metals”, Dusseldorf, December 1971, and Werkstoffe und Korrosion, Vol, 23, (1972).Google Scholar
(3) “Stress effects and the oxidation of metals”, edited by Cafhcart, J. V., TMS-AIME, New York, (1975).Google Scholar
(4) Douglass, D. L., Oxidation of Metals, Vol. I, (1969), p 127.Google Scholar
(5) Stringer, J., Corrosion Science, Vol. 10, (1970), p 513.Google Scholar
(6) Stringer, J., Werkstoffe und Korrosion, Vol. 23, (1972), p 747.Google Scholar
(7) Hancock, P. and Hurst, R. C., in “Advances in corrosion science and technology”, edited by Fontana, M. G. and Staehle, R. W., Plenum Press (1974), p1.Google Scholar
(8) Cathcart, J. V., in “Properties of high temperature alloys”, edited by Foroulis, Z. A. and Petit, F. S., The Electochemical Society, Princeton, N. J., (1976), p 99.Google Scholar
(9) Cathcart, J. V. and Pawel, R. E., in “Corrosion/erosion of coal conversion system materials”, Conference proceedings, Berkeley, CA., (1979).Google Scholar
(10) Pawel, R. E., Cathcart, J. V. and Campbell, J., Journal of Electrochemical Society, Vol. 110, (1963), p 551.Google Scholar
(11) Pawel, R. E. and Campbell, J., Journal of Electrochemical Society, Vol 16, (1969), p 828.Google Scholar
(12) Pawel, R. E. and Campbell, J., in reference (3)Google Scholar
(13) Bruce, D. and Hancock, P., Journal of Institute of Metals, Vol. 97, (1969), p 140.Google Scholar
(14) Bruce, D. and Hancock, P., Journal of Institute of Metals, Vol. 97, (1969), p 148.Google Scholar
(15) Hurst, R. C. and Hancock, P., Werkstoffe und Korrosion, Vol. 9, (1972), p 773.Google Scholar
(16) Hancock, P., in reference (3), p 155.Google Scholar
(17) Jayaraman, N. and Verrilli, M. J., Journal of Materials Science, 24 (1989) 1327-1331Google Scholar
(18) Fitch, A. N., Catlow, C. R. A. and Addnson, A., Journal of Materials Sciece, 26 (1991) 2300-2304Google Scholar
(19) Noyan, I. C. and Cohen, J. B., “Residual Stress, Measurement by Diffraction and Interpretation”, Springer, New York (1987).Google Scholar
(20) Jayaraman, N., Froning, M. J., “Quantitative phase analysis by x-ray diffraction of ZrO2, 8Y2O3”, High Temperature Coatings, Khobaib, M. & Krutennat, R. C, 1987 published by Metallurgical by Metallurgical Society, inc., Warrendale, PA, p 179-192.Google Scholar
(21) Noyan, I. C., Metallurgical Transactions, Vol. HA, (1983), p 249.Google Scholar
(22) JCPDS (Joint Committee on Powder Diffraction Standards) X-ray powder data file No. O 5-0667.(Powder Diffraction File 1993 - International Centre for Diffraction Data).Google Scholar
(23) “Engineering properties of selected ceramic materials” (American Ceramic Society, Columbus, 1966) Section 5. 4. 11-4).Google Scholar