Abstract
Ti, Al, graphite and diamond powders were used as raw materials to prepare Ti2AlC matrixbonded diamond composite using self-propagating high-temperature synthesis (SHS) method. The effect of diamond size and content on the fabrication of Ti2AlC-bonded diamond material was investigated. Results showed that Ti2AlC matrix-bonded diamond composites could be obtained by SHS. The phase composition and microstructure of the Ti2AlC-bonded diamond material were influenced by the diamond content and size. When the diamond (93 μm) additive amounts were 10% and 20%, the product phases included Ti2AlC, TiC and Al3Ti. However, excess Ti and Al persisted in the sample that contained 30% diamond. Diamond bonded well with the matrix in the sample that contained 10% diamond. Moreover, addition of coarse diamond particles with sizes of 93 and 125 μm produced a mainly Ti2AlC matrix. However, diamond adequately reacted with Ti to form TiC when finer diamond particles (5 and 10 μm) were used.
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Funded by National Natural Science Foundation of China(Nos. 51602356 and 11472316), the University Innovation Team Project in Henan Province (Nos. 15IRTSTHN004, 16A430049, 17A430034, and 18A430035) and Henan Innovative Excellent Scientific and Technological Team (No. CXTD2013048)
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Zhang, W., Liang, B., Luo, W. et al. Hybrid Ti2AlC Bonded Diamond Composites Prepared by a Self-propagation Sintering Approach. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 34, 82–85 (2019). https://doi.org/10.1007/s11595-019-2018-x
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DOI: https://doi.org/10.1007/s11595-019-2018-x