DOI: 10.1111/j.1151-2916.2003.tb03473.x. Thermal Conductivity and Thermal Expansion Coefficients of the Lanthanum Rare‐Earth‐Element Zirconate System

Thermal Conductivity and Thermal Expansion Coefficients of the Lanthanum Rare‐Earth‐Element Zirconate System

10.1111/j.1151-2916.2003.tb03473.x

Crossref journal-article

Wiley

Journal of the American Ceramic Society (311)

Abstract

To enhance the insulating properties of a thermal barrier coating, one has to focus on new materials with lower intrinsic thermal conductivity than established yttria‐stabilized zirconia. Substances with pyrochlore structure were investigated. Starting from lanthanum zirconate, substitutions of the lanthanum by other trivalent rare‐earth elements were made, and the thermal conductivity and the thermal expansion coefficient of the manufactured materials were measured. A complete substitution of the lanthanum led to increased thermal expansion coefficients, whereas the partial substitution did not show an appreciable effect. The thermal conductivities of the modified materials were lower than that of the pure lanthanum zirconate for temperatures <1000°C for all amounts and elements of substitution. A comparison of the observed values with calculated values of the thermal conductivities showed a relatively good agreement.

Bibliography

Lehmann, H., Pitzer, D., Pracht, G., Vassen, R., & StÃ¶ver, D. (2003). Thermal Conductivity and Thermal Expansion Coefficients of the Lanthanum RareâEarthâElement Zirconate System. Journal of the American Ceramic Society, 86(8), 1338â1344. Portico.

Authors 5

Henry Lehmann (first)
Dieter Pitzer (additional)
Gerhard Pracht (additional)
Robert Vassen (additional)
Detlef Stöver (additional)

References 24 Referenced 435

10.1016/0257-8972(87)90003-X
10.1007/s11666-997-0009-5
{'key': 'e_1_2_1_4_2', 'first-page': '241', 'volume-title': 'Science and Technology of Zirconia', 'author': 'Miller R. A.', 'year': '1981'} / Science and Technology of Zirconia by Miller R. A. (1981)
10.1111/j.1151-2916.2000.tb01506.x
{'key': 'e_1_2_1_6_2', 'first-page': '1627', 'article-title': 'New Materials for Advanced Thermal Barrier Coatings', 'author': 'Vassen R.', 'year': '1998', 'journal-title': '6th Liege Conference on Materials for Advanced Power Engineering'} / 6th Liege Conference on Materials for Advanced Power Engineering / New Materials for Advanced Thermal Barrier Coatings by Vassen R. (1998)
M. J.Maloney “Thermal Barrier Coating Systems and Materials ”U.S. Pat. No. 6 177 200 1998.
{'key': 'e_1_2_1_8_2', 'first-page': '1669', 'volume-title': 'Proceedings of the 15th International Thermal Spray Conference', 'author': 'Wilden J.', 'year': '1998'} / Proceedings of the 15th International Thermal Spray Conference by Wilden J. (1998)
10.1111/j.1151-2916.2001.tb00962.x
10.1002/9780470294574.ch34
10.1016/S1359-6454(00)00295-0
{'key': 'e_1_2_1_12_2', 'first-page': '23', 'volume-title': 'Thermal Conductivity of Solids', 'author': 'Parrott J. E.', 'year': '1975'} / Thermal Conductivity of Solids by Parrott J. E. (1975)
{'key': 'e_1_2_1_13_2', 'volume-title': 'Progress in Ceramic Science', 'author': 'Kingery W. D.'} / Progress in Ceramic Science by Kingery W. D.
K. H.Hellwege Einführung in die Festkörperphysik Vol.1; p.105.Springer‐Verlag Berlin and New York 1968. (10.1007/978-3-642-95055-1_1)
10.1007/978-3-642-47491-0
10.1016/0079-6786(83)90001-8
{'key': 'e_1_2_1_17_2', 'first-page': '1', 'volume-title': 'Thermal Conduction in Solids', 'author': 'Berman R.', 'year': '1976'} / Thermal Conduction in Solids by Berman R. (1976)
{'key': 'e_1_2_1_18_2', 'first-page': '2', 'volume-title': 'Thermal Conductivity', 'author': 'Klemens P. G.', 'year': '1969'} / Thermal Conductivity by Klemens P. G. (1969)
{'key': 'e_1_2_1_19_2', 'first-page': '209', 'volume-title': 'Thermal Conductivity', 'author': 'Klemens P. G.', 'year': '1994'} / Thermal Conductivity by Klemens P. G. (1994)
10.1063/1.1289803
10.1088/0370-1298/68/12/303
10.1016/S0081-1947(08)60359-8
10.1002/9780470294758.ch47
{'key': 'e_1_2_1_24_2', 'volume-title': 'Rept. No. ORNL/Sub/88–22042/2', 'author': 'Wahiduzzaman S.', 'year': '1992'} / Rept. No. ORNL/Sub/88–22042/2 by Wahiduzzaman S. (1992)
L.Dusza “Software Manual for Laser Flash Evaluation (LFE) ” distributed by Theta Industries Inc. Port Washington NY 1995.

Dates

Type	When
Created	16 years, 1 month ago (July 18, 2009, 12:09 a.m.)
Deposited	1 year, 9 months ago (Nov. 22, 2023, 3:34 p.m.)
Indexed	52 minutes ago (Sept. 7, 2025, 2:15 p.m.)
Issued	22 years, 1 month ago (Aug. 1, 2003)
Published	22 years, 1 month ago (Aug. 1, 2003)
Published Online	20 years, 8 months ago (Dec. 20, 2004)
Published Print	22 years, 1 month ago (Aug. 1, 2003)

Funders 0

None

BibTeX

@article{Lehmann_2003, title={Thermal Conductivity and Thermal Expansion Coefficients of the Lanthanum Rare‐Earth‐Element Zirconate System}, volume={86}, ISSN={1551-2916}, url={http://dx.doi.org/10.1111/j.1151-2916.2003.tb03473.x}, DOI={10.1111/j.1151-2916.2003.tb03473.x}, number={8}, journal={Journal of the American Ceramic Society}, publisher={Wiley}, author={Lehmann, Henry and Pitzer, Dieter and Pracht, Gerhard and Vassen, Robert and Stöver, Detlef}, year={2003}, month=aug, pages={1338–1344} }

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