Hostname: page-component-745bb68f8f-f46jp Total loading time: 0 Render date: 2025-01-10T06:18:13.721Z Has data issue: false hasContentIssue false
  • English
  • Français

Thermal conductivity of ceramics in the ZrO2-GdO1.5system

Published online by Cambridge University Press:  31 January 2011

Jie Wu ,
Nitin P. Padture ,
Paul G. Klemens ,
Maurice Gell ,
Eugenio García ,
Pilar Miranzo  and
Maria I. Osendi
Jie Wu
Affiliation:
Department of Metallurgy and Materials Engineering, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136
Nitin P. Padture*
Affiliation:
Department of Metallurgy and Materials Engineering, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136
Paul G. Klemens
Affiliation:
Department of Physics, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136
Maurice Gell
Affiliation:
Department of Metallurgy and Materials Engineering, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136
Eugenio García
Affiliation:
Instituto de Cerámica y Vidrio, CSIC, Cantoblanco, 28049 Madrid, Spain
Pilar Miranzo
Affiliation:
Instituto de Cerámica y Vidrio, CSIC, Cantoblanco, 28049 Madrid, Spain
Maria I. Osendi
Affiliation:
Instituto de Cerámica y Vidrio, CSIC, Cantoblanco, 28049 Madrid, Spain
*
a)Address all correspondence to this author.[email protected]
Get access

Abstract

Low thermal conductivity ceramics in the ZrO2–GdO1.5 system have potential in structural (refractories, thermal barrier coatings, thermal protection) and nuclear applications. To that end, the thermal conductivities of hot-pressed xGdO1.5 ·(1 – x)ZrO2 (where x = 0.05, 0.15, 0.31, 0.50, 0.62, 0.75, 0.89, and 1.00) solid solutions were measured, for the first time, as a function of temperature in the range 25 to 700 °C. On the ZrO2-rich side, the thermal conductivity first decreased rapidly with increasing concentration of GdO1.5 and then reached a plateau. On the GdO1.5-rich side, the decrease in the thermal conductivity with increasing concentration of ZrO2 was less pronounced. The thermal conductivity was less sensitive to the composition with increasing temperature. The thermal conductivity of pyrochlore Gd2Zr2O7 (x = 0.5) was higher than that of surrounding compositions at all temperatures. A semiempirical phonon-scattering theory was used to analyze the experimental thermal conductivity data. In the case of pure ZrO2 and GdO1.5, the dependence of the thermal conductivity to the absolute temperature (T) was less than 1/T. Therefore, the minimum thermal conductivity theory was applied, which better described the temperature dependence of the thermal conductivity of pure ZrO2 and GdO1.5. In the case of solid solutions, phonon scattering by cation mass fluctuations and additional scattering by oxygen vacancies on the ZrO2-rich side and by gadolinium vacancies on the GdO1.5-side seemed to account for the composition and temperature dependence of the thermal conductivity.

Type
Articles
Information
Journal of Materials Research , Volume 17 , Issue 12 , December 2002 , pp. 3193 - 3200
Copyright
Copyright © Materials Research Society 2002

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.Suresh, G., Seenivasan, G., Krishnaiah, M.V., and Murti, P.S., J. Nucl. Mater. 249, 259 (1997).Google Scholar
2.Padture, N.P., Gell, M., and Jordan, E.H., Science 296, 280 (2002).Google Scholar
3.Bevan, D.J.M. and Summerville, E., in Handbook on the Physics and Chemistry of Rare Earths: Non-Metallic Compounds I, edited by Gschneider, K.A. and Eyring, L.R. (North-Holland Physics Publishing, New York, 1979), Vol. 3, p. 412.Google Scholar
4.Subramanian, M.A. and Sleight, A.W., in Handbook on the Physics and Chemistry of Rare Earths, edited by Gschneider, K.A. and Erying, L. (Elsevier Science Publishers, Oxford, U.K., 1993), Vol.16, p. 225.Google Scholar
5.Vaßen, R., Cao, X., Tietz, F., Basu, D., and Stöver, D., J. Am. Ceram. Soc. 83, 2023 (2000).CrossRefGoogle Scholar
6.Maloney, M.J., U.S. Patent No. 6 117 560 (2000).Google Scholar
7.Maloney, M.J., U.S. Patent No. 6 284 323 (2001).Google Scholar
8.Suresh, G., Seenivasan, G., Krishnaiah, M.V., and Murti, P.S., J. Alloys Compd. 269, L9 (1998).Google Scholar
9.Wu, J., Wei, X., Padture, N.P., Klemens, P.G., Gell, M., Garcia, E., Miranzo, P., and Osendi, M.I., J. Am. Ceram. Soc. 85 (2002).Google Scholar
10.Ring, T.A., Fundamentals of Ceramic Powder Processing and Synthesis (Academic Publishers, New York, 1996).Google Scholar
11.Maglic, K.D., Cezairliyan, A., and Peletsky, V.E., ASTM Standards E1461-92, E1269-92 (Plenum Press, New York, 1992).Google Scholar
12.Kubaschewski, O. and Alcock, C.B., Metallurgical Thermochemistry (Pergamon Press, London, U.K., 1967).Google Scholar
13.Swalin, R.A., Thermodynamics of Solids (John Wiley & Sons, New York, 1972).Google Scholar
14.Klemens, P.G., High Temp.-High Press, 23, 241 (1991).Google Scholar
15.Schlichting, K.W., Padture, N.P., and Klemens, P.G., J. Mater. Sci. 36, 3003 (2001).Google Scholar
16.Raghavan, S., Wang, H., Dinwiddie, R.B., Porter, W.D., and Mayo, M.J., Scr. Mater. 39, 1119 (1998).CrossRefGoogle Scholar
17.Raghavan, S., Wang, H., Porter, W.D., Dinwiddie, R.B., and Mayo, M.J., Acta Mater. 49, 169 (2001).CrossRefGoogle Scholar
18.Klemens, P.G., in Thermal Conductivity, edited by Tye, R.P. (Academic Press, !London, U.K., 1969), Vol. 1, p. 1.Google Scholar
19.Klemens, P.G., in Thermal Conductivity 23, edited by Wilkes, K.E., Dinwiddie, R.B., and Graves, R.S. (Technomics Publishing Co., Lancaster, PA, 1996), p. 209.Google Scholar
20.Slack, G.A., in Solid State Physics, edited by Ehrenreich, H., Seitz, F., and Turnbull, D. (Academic Publishers, New York, 1979), Vol. 34, p. 1.Google Scholar
21.Green, D.J., Hannink, R.H.J., and Swain, M.V., Transformation Toughening of Ceramics (CRC Press, Boca Raton, FL, 1989).Google Scholar
22.Balestrieri, D., Philipponneau, Y., Decroix, G.M., Jorand, Y., and Fantozzi, G., J. Eur. Ceram. Soc. 18, 1073 (1998).Google Scholar
23.Roufosse, M.C. and Klemen, P.G., J. Geophys. Res. 79, 703 (1974).Google Scholar
24.Tavernier, J., Acad, C. R.. Sci. 245, 1705 (1957).Google Scholar
25.Ratsifaritana, C.A. and Klemens, P.G., Int. J. Thermophys. 8, 737 (1987).Google Scholar
26.Perez-Y-Jorba, M., Ann. Chim. (Paris) 7, 479 (1962).Google Scholar
27.Harris, J.H., Erk, R.C., and Youngblood, R.A., Phys. Rev. B 47, 5428 (1993).Google Scholar
28.Nicholls, J.R., Lawson, K.J., Johnstone, A., and Rickerby, D.S., Surf. Coat. Technol. 151, 383 (2002).Google Scholar
29.Zhu, D. and Miller, R.A., Ceram. Eng. Sci. Proc. 23, (2002, in press).Google Scholar