Abstract
Ti2InC is expected to have promising applications in many fields owing to its excellent conductivity and stability, and large-scale synthesis of high-quality Ti2InC is crucial to explore its various potential applications. In this paper, Ti2InC powder is synthesized starting from elemental Ti/In/C powder mixtures by pressureless sintering. Composition of starting powder and sintering parameters are optimized for synthesizing Ti2InC. Ti2InC phase can be obtained facilely by sintering a mixture of 2Ti/1In/0.95C (molar ratio) at 1250 °C for 1.5 h, which greatly shortens the preparation time. The purity of the Ti2InC in the sintered product reaches 94 wt%, evaluated by the relative intensity ratio (RIR) method analysis, and unreacted C is confirmed as a major impurity phase. The reaction path of Ti2InC formation is revealed by DSC, XRD, and SEM, and the formation mechanism of Ti2InC is discussed. A novel discovery is that TiC is not formed during the synthesis of Ti2InC.
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