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Spark plasma sintering of ultra refractory compounds

  • Proceedings of the Symposium on Spark Plasma Synthesis and Sintering
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Abstract

Spark plasma sintering experiments were conducted on Zr- and Hf-based borides and carbides with the addition of 1, 3, and 9 vol% MoSi2 as sintering aid. For comparison, as-received ZrC, HfC, ZrB2, HfB2 powders were also sintered. The microstructural features were investigated by means of scanning electron microscop–energy dispersive spectroscopy technique. Silicon carbide was detected in all the doped compositions along with significant amounts of oxide species (Hf/ZrO2, and SiO2). The effect of the MoSi2 content on densification, microstructure, and mechanical properties is analyzed.

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Acknowledgement

The authors wish to thank L. Silvestroni for materials preparation and G. Celotti for X-ray diffraction analysis.

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Authors and Affiliations

  1. ISTEC-CNR, Institute for Science and Technology of Ceramics, Via Granarolo 64, 48018, Faenza, Italy

    Diletta Sciti

  2. Arrhenius Laboratory, Department of Inorganic Chemistry, Stockolm University, 10691, Stockolm, Sweden

    Mats Nygren

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  1. Diletta Sciti
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  2. Mats Nygren
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Correspondence to Diletta Sciti.

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Sciti, D., Nygren, M. Spark plasma sintering of ultra refractory compounds. J Mater Sci 43, 6414–6421 (2008). https://doi.org/10.1007/s10853-008-2718-7

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  • DOI: https://doi.org/10.1007/s10853-008-2718-7

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