Preparation and Microstructure of (La0.5Sm0.5)2(Zr0.7Ce0.3)2O7 Ceramics Prepared by Chemical Coprecipitation Method

Xian Kai Sun; Guang Hai Wang; S.C. Zhang; Hao Ran Sun; Kai Fang; Yu Feng Chen

doi:10.4028/www.scientific.net/KEM.697.89

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Preparation and Microstructure of (La_0.5Sm_0.5)₂(Zr_0.7Ce_0.3)₂O₇Ceramics Prepared by Chemical Coprecipitation Method

Abstract:

Ceramic materials of (La_0.5Sm_0.5)₂(Zr_0.7Ce_0.3)₂O₇ composition powder was synthesized by chemical coprecipitation method using Sm₂O₃, La₂O₃, Ce (NO₃)₃·6H₂O and ZrOCl₂·8H₂O powders as raw materials. Microstructure and phases of (La_0.5Sm_0.5)₂(Zr_0.7Ce_0.3)₂O₇ (LSZCO) powder was examined by Transmission Electron Microscope (TEM) and X-ray diffraction (XRD). The specific surface area of powders were determined by BET specific surface area test. The structure of LSZCO powder remained in pyrochlore with the increase of temperature more than 1200 °C. According to the impact on the specific surface area of LSZCO powder, the factors of the process is ordered in descending sequence as follows: pH value, dispersant content, concentration of reactants, the reaction temperature.

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Key Engineering Materials (Volume 697)

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89-92

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.697.89

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Online since:

July 2016

Authors:

Xian Kai Sun, Guang Hai Wang*, S.C. Zhang, Hao Ran Sun, Kai Fang, Yu Feng Chen

Keywords:

Ceramic, Powder, Pyrochlore, Thermal Barrier Coating (TBC)

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References

[1] M.G. Hocking, V. Vasantasree, P.S. Sidky, Metallic Ceramic Coatings, Longman scientific and technical, Harlow, (1989).

Google Scholar

[2] R. Gadow, M. Lischka, Lanthanum hexaaluminate – novel thermal barrier coatings for gas turbine applications - materials and process development, Surf. Coat. Tech. 151-152 (2002) 392-399.

DOI: 10.1016/s0257-8972(01)01642-5

Google Scholar

[3] J. Wigren, L. Pejryd, in: C. Coddet (Ed. ), Thermal Spray —Meeting the Challenges of the 21st Century, ASM International, Materials Park, 1998, p.1531–1542.

Google Scholar

[4] C.G. Levi, Emerging Materials and Process for Thermal Barrier Systems, Curr. Opin. Solid. St. M. 8 (2004) 77-91.

Google Scholar

[5] G. Seenivasan, M.V. Krishnaiah, P. Srirama, Investigation of the thermal conductivity of selected compounds of gadolinium and lanthanum, J. Nucl. Mater. 249 (1999) 259-261.

DOI: 10.1016/s0022-3115(97)00235-3

Google Scholar

[6] X. Qiang, P. Wei, W. Jingdong. Preparation and Thermophysical Properties of Dy2Zr2O7 Ceramic for Thermal Barrier Coatings, Mater. Lett. 59 (2005) 2804-2807.

DOI: 10.1016/j.matlet.2005.03.061

Google Scholar

[7] D. Stover, G. Pracht, H. Lehmann. New Material Concepts for the Next Generation of Plasma-Sprayed Thermal Barrier Coating, J. THERM. Spray. TECHN. 13 (2004) 76-83.

DOI: 10.1007/s11666-004-0052-4

Google Scholar