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Microstructure and Properties of the Mullite–ZrO2(Y2O3)–Si3N4-Composite Ceramics Sintered in by Different Methods

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Refractories and Industrial Ceramics Aims and scope

The purpose of the study was to investigate densification, phase composition, microstructure and properties of mullite–ZrO2 composite ceramics with the Si3N4 additive, sintered by various methods: conventional sintering, spark-plasma sintering, and sintering in both microwave and solar furnaces. The strength properties (compressive strength and elastic modulus) of the ceramic samples sintered by the conventional method and by spark-plasma sintering were compared. Some reasons for the formation of defects in the samples after sintering in microwave and solar furnaces are indicated

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The work was financed by the European Regional Development Fund within the project 1.1.1.1/16/A/077 “Mining and synthetic nano powders for obtaining porous ceramics and modification of ceramic materials” and within the project SFERA PROJECT 2017 “Mullite-zirconia refractory materials development by solar furnace sintering”.

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Authors and Affiliations

  1. Riga Technical University, Institute of Silicate Materials, Riga, Latvia

    G. Sedmale, L. Grase & I. Zalite

  2. Platforma Solarde Almeria, Tabernas, Spain

    J. Rodrigues

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  1. G. Sedmale
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  2. L. Grase
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  3. I. Zalite
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  4. N. Zilinska
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  5. J. Rodrigues
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Correspondence to G. Sedmale.

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Translated from Novye Ogneupory, No. 7, pp. 49 – 54, July 2018.

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Sedmale, G., Grase, L., Zalite, I. et al. Microstructure and Properties of the Mullite–ZrO2(Y2O3)–Si3N4-Composite Ceramics Sintered in by Different Methods. Refract Ind Ceram 59, 369–374 (2018). https://doi.org/10.1007/s11148-018-0238-9

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  • DOI: https://doi.org/10.1007/s11148-018-0238-9

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