Influence of sintering temperature and CrB₂ addition on properties of titanium diboride produced by spark plasma sintering

Iwona Sulima, Lucyna Jaworska, Paweł Pałka, Paweł Hyjek, Paweł Kurtyka

Quarterly No. 1, 2016 pages 30-36

DOI:

keywords: spark plasma sintering (SPS), composites, titanium diboride (TiB₂), chromium diboride (CrB₂)

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abstract The effect of a 5 vol.% chromium diboride addition on the microstructure and properties of sintered titanium diboride was investigated. The preliminary results of studies of TiB₂-5CrB₂ composites sintered by SPS were discussed. The density, Young's modulus and Vickers hardness of the obtained sinters were examined. Microstructural examinations were carried out by SEM. It was found that sintering TiB₂ ceramics by SPS at temperatures of 2000 and 2200°C for 10 minutes is not sufficient. The results of testing the physical and mechanical properties of TiB₂-5CrB₂ composites have shown that the use of CrB₂ may be a good way to obtain a composite material for high performance applications. The best properties were obtained by the composite materials sintered at 2200°C. The results will serve as a basis for further optimization of the SPS process for composite fabrication.