Synthesis of Ti 2 SnC under Optimized Experimental Parameters of Pressureless Spark Plasma Sintering Assisted by Al Addition

As an effective and novel rapid sintering technology with the advantages of fast heating speed and short sintering time, SPS has been applied to the research and development of various materials. After sintering at 1325°C, Ti 5 Sn 3 and Sn occurred as impurities accompanying the synthesis of Ti 2 Sn...

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Veröffentlicht in:Advances in materials science and engineering 2018-01, Vol.2018 (1)
Hauptverfasser: Lu, Chen, Wang, Yue, Wang, Xiaofan, Zhang, Jianfeng
Format: Artikel
Sprache:eng
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Zusammenfassung:As an effective and novel rapid sintering technology with the advantages of fast heating speed and short sintering time, SPS has been applied to the research and development of various materials. After sintering at 1325°C, Ti 5 Sn 3 and Sn occurred as impurities accompanying the synthesis of Ti 2 SnC with a raw powder mixture of Ti/Sn/C = 2/1/1 (molar ratio). But by addition of 0.2 molar Al, and further optimization of sintering parameters at 1400°C for 10 min, almost fully pure Ti 2 SnC was obtained with a clear layered microstructure. The reaction mechanism analysis suggests that this beneficial effect of Al could be attributed to the suppression of decomposition of Ti 2 SnC by formation of Ti 2 Sn x Al 1− x C solid solution at a high sintering temperature. The present study reports a novel route to synthesize Ti 2 SnC by PL‐SPS with a self‐designed graphite die, and Al was also proposed as a sintering aid to remove impurities.
ISSN:1687-8434
1687-8442
DOI:10.1155/2018/9861894