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Fabrication and mechanical properties of porous TiB2 ceramic

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Abstract

Porous material of TiB2 with improved mechanical properties was fabricated by vacuum and pressureless sintering. The microstructure of the porous ceramic was characterized by the enhanced neck growth between the initially touching particles. This neck growth was ascribed to the selective heating of TiB2 particles with different dimension. The porous structure prepared by the high-temperature sintering exhibited higher bending strength and fracture toughness in the present experiment. The improved mechanical properties of the sintered composites were attributable to the enhanced neck growth by surface diffusion.

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Acknowledgements

This work was supported by the program for NCTE and the National Natural Science Foundation of China (Project No. 90505015). We would also show thanks the support of the Foundation of National Key Laboratory for Remanufacturing.

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Authors and Affiliations

  1. Center for Composite Materials and Structure, Harbin Institute of Technology, Harbin, 150001, P.R. China

    Changqing Hong, Xinghong Zhang, Jiecai Han & Baolin Wang

  2. Anhui University of Technology and Science, Wuhu, 241000, P.R. China

    Xinghong Zhang

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  1. Changqing Hong
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  2. Xinghong Zhang
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  3. Jiecai Han
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  4. Baolin Wang
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Correspondence to Changqing Hong.

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Hong, C., Zhang, X., Han, J. et al. Fabrication and mechanical properties of porous TiB2 ceramic. J Mater Sci 41, 4790–4794 (2006). https://doi.org/10.1007/s10853-006-0040-9

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  • DOI: https://doi.org/10.1007/s10853-006-0040-9

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