Rapid and low temperature synthesis of high purity Ti₂SC powder by microwave hybrid heating

Abstract

Ti₂SC powders were successfully synthesised at relatively low temperature by a microwave hybrid heating method. The mixtures of Ti, C and S or TiS₂ with different molar ratios were heated to investigate the formation of Ti₂SC phase. It was confirmed that Ti₂SC with high purity was achieved using TiS₂ as sulphur source. The results indicated that the synthesis temperature of Ti₂SC was ∼500°C lower, and holding time was only one-twentieth compared with those reported by other methods. The high purity Ti₂SC powders from Ti/TiS₂/C with the molar ratio of 2.85:1.15:2 obtained at 1100°C for 3 min were uniform, and the average particle size was 1–2 μm.

Keywords:

• Ti₂SC
• Ceramics
• Microwave hybrid heating
• Phase transformation

Acknowledgements

This work was supported by the Natural Science Fundamental Research of Education Department of Henan Province (grant nos. 14A430032 and 15A430021) and the Plan of Natural Science Fundamental Research in Henan University of Technology.