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In Situ Synthesis Aluminum Borate Whiskers Reinforced TiB2 Matrix Composites for Application in Aluminum Reduction Cells

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Abstract

The TiB2 matrix ceramics reinforced by aluminum borate whiskers (Al18B4O33 w) had been prepared by the pressureless sintering method. The mechanical properties and densification behavior of the TiB2 matrix ceramics were investigated. The results showed that Al18B4O33 w was in situ synthesized by the reaction of boehmite (AlOOH) and TiB2 powders during the sintering process. Increasing the sintering temperature had benefited for densification of the TiB2 matrix ceramics. Al18B4O33 w could increase the flexural strength and Vicker’s hardness. It is obtained that the maximum value Vicker’s hardness with 1.81 GPa and flexural strength with 82 MPa for samples sintered at 1600°C.

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Acknowledgements

The authors gratefully acknowledge financial support from CHALCO’s major project (ZB2011CBBCe1).

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Authors and Affiliations

  1. Zhengzhou Research Institute of CHALCO, Zhengzhou, 450041, People’s Republic of China

    Gang Zhang & Jianhong Yang

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  1. Gang Zhang
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  2. Jianhong Yang
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Correspondence to Gang Zhang.

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Zhang, G., Yang, J. In Situ Synthesis Aluminum Borate Whiskers Reinforced TiB2 Matrix Composites for Application in Aluminum Reduction Cells. JOM 65, 1467–1471 (2013). https://doi.org/10.1007/s11837-013-0710-4

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  • DOI: https://doi.org/10.1007/s11837-013-0710-4

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