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ZrO2 foams for porous radiant burners

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Abstract

In this work, Y2O3-stabilized ZrO2 (YSZ) foams with low relative density were developed through the replication method, for application as porous radiant burners. The ceramic foams were produced by impregnation of open-cell polyurethane foams with aqueous suspensions and different fractions of raw materials: ZrO2–8% Y2O3 (8YSZ) powder, and additives. The materials were milled for 10–40 min. The impregnated foams were dried and submitted to a heat treatment for polyurethane elimination at 1000 °C for 1 h, with subsequent sintering of the remaining ceramic structure at 1600 °C for 2 h, which resulted in YSZ foams with low relative density (0.07). The structural analysis revealed a cellular structure with an average mechanical strength of 95.6 kPa. The radiation efficiency (>19%) was obtained by tests with different air/fuel ratio. The ceramic matrixes exhibited high performance and structural integrity at high operation temperatures (1400 °C).

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Acknowledgements

The authors are grateful to Capes and CNPq/Brazil for funding this work. The authors are equally grateful to labCET (UFSC) for their collaboration with the porous burner’s test.

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Authors and Affiliations

  1. Group of Materials and Manufacture (CIPP-CIPEM), Department of Mechanical Engineering, University of Los Andes, Cra 1 Este No. 19A-40, Bogota, Colombia

    Sergio Yesid Gómez, J. A. Escobar & O. A. Alvarez

  2. Design of Products and Processes Group (GDPP), Department of Chemical Engineering, University of los Andes, Cra 1 Este No. 19A-40, Bogota, Colombia

    Sergio Yesid Gómez & O. A. Alvarez

  3. Group of Ceramic and Glass Materials (CERMAT), Departments of Chemical and Mechanical Engineering (EQA/EMC), Federal University of Santa Catarina—UFSC, P.O. Box 476, Florianópolis, SC, 88040-900, Brazil

    C. R. Rambo, A. P. Novaes de Oliveira & D. Hotza

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  1. Sergio Yesid Gómez
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  2. J. A. Escobar
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  3. O. A. Alvarez
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  4. C. R. Rambo
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  5. A. P. Novaes de Oliveira
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  6. D. Hotza
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Correspondence to Sergio Yesid Gómez.

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Gómez, S.Y., Escobar, J.A., Alvarez, O.A. et al. ZrO2 foams for porous radiant burners. J Mater Sci 44, 3466–3471 (2009). https://doi.org/10.1007/s10853-009-3462-3

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  • DOI: https://doi.org/10.1007/s10853-009-3462-3

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