Synthesis and Characterization of Thermal Properties of Type Eu2O3-ZrO2 Sinters

• Autorzy: Jucha S. , Moskal G. , Mikuśkiewicz M.

Identyfikatory

DOI

10.1515/amm-2016-0188

• Języki publikacji: EN

Abstrakty

EN

The oxides with pyrochlore or defected fluorite structure are a potential alternative ceramic materials for now widely used yttria-stabilized zirconia 8YSZ in the application for the insulation layer of thermal barrier coatings systems. This paper presents a procedure of synthesis of europium zirconate of Eu₂Zr₂O₇ type, by the method of high temperature sintering under pressure. The analysis of the effect of the powders` homogenization methods on homogeneity of final sintered material showed that the highest homogeneity can be obtained after mechanical mixing in alcohol. Moreover, the DSC investigation carried out on a mixture of powders before the sintering process and on the material after high temperature sintering under pressure, suggest the synthesis of a new phase an europium zirconate Eu₂Zr₂O₇ with the pyrochlore structure. Obtained phase was characterized by stability over the entire range of tested temperature, i.e. to 1450°C. The resulting material based on europium zirconate has a lower coefficient of thermal diffusivity than the now widely used 8YSZ.

Słowa kluczowe

EN

pyrochlores; europium zirconates; thermal diffusivity; TBC

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2016
• Tom: Vol. 61, iss. 2B
• Strony: 1121--1128
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wykr.

Twórcy

autor

Jucha S.

• Silesian University of Technology, Department of Production Engineering, 8 Krasińskiego Str., 40-019 Katowice, Poland

autor

Moskal G.

• Silesian University of Technology, Institute of Materials Science, 8 Krasińskiego Str., 40-019 Katowice, Poland

autor

Mikuśkiewicz M.

• Silesian University of Technology, Institute of Materials Science, 8 Krasińskiego Str., 40-019 Katowice, Poland

Bibliografia

• [1] M. Cieśla, F. Binczyk, M. Mańka, Sol. St. Phen. 212, 247-254 (2014).
• [2] H. Zhao, M. R. Begley, A.Heuer, R. Sharghi-Moshtaghin, H. N. G. Wadley, Surf. Coat. Tech. 205, 4355-4365 (2011).
• [3] M. Cieśla, F. Binczyk, M. Mańka, Sol. St. Phen. 212, 229-236 (2014).
• [4] J. Okrajni, M. Cieśla, L. Swadźba, Fatigue Fract. Eng. M21, 947-954 (1998).
• [5] L. Swadźba, G. Moskal, B. Mendala, M. Hetmańczyk, Arch. Metall. Mater. 53, 945-954 (2008).
• [6] D. R. Clarke, S. R. Phillpot, Mater. Today 8, 22-29 (2005).
• [7] G. Moskal, L. Swadźba, M. Hetmańczyk, B. Witala, B. Mendala, J. Mendala, P. Sosnowy, J. Eur. Ceram. Soc. 32, 2035-2042 (2012).
• [8] M. A. Subramanian, A. W. Sleight, Rare earth pyrochlores, in: ed. K. A. Gschneider, L. Erying, Handbook on the Physics and Chemistry of Rare Earths, Elsevier Science Publishers, 225-248 (1993), Oxford, UK.
• [9] R. Vassen, D. Stoever, Conventional and new materials for thermal barrier coatings, in: (ed.) M.I. Baraton and I. Uvarova, Functional Grandient Materials and Surface Layers Prepared by Fine Particles Technology, Kluwer Academic Publishers, 199-216, Netherlands 2001.
• [10] M. Stopyra, G. Moskal, D. Niemiec, Surf. Coat. Tech. 284, 38-43 (2015).

Uwagi

EN

This work was supported by Institute of Materials Science of Silesian University of Technology, as a part of Statutory Research no BK220/RM3/2015 (11/030/BK-15/0025).

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę