Synthesis and reaction evolution of high-purity Ti₂SC powder by microwave hybrid heating at low temperature

Abstract

Highly pure Ti₂SC was synthesised by microwave hybrid heating. The effects of composition and processing parameters, such as microwave output power, sintering temperature and dwell time on the formation process and morphology of Ti₂SC were studied. The purity of Ti₂SC is sensitive to the content of sulphur and sintering temperature. The results indicated that the optimum condition for synthesising Ti₂SC was using a mixture of 1.15TiS₂/2.85Ti/2C powders irradiated under a 100% microwave output power sintering at 1100°C for 3 min at Ar atmosphere. In addition, the reaction evolution of Ti₂SC was discussed in details.

Keywords:

• Ti₂SC
• Microwave hybrid heating
• Reaction evolution

Acknowledgements

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