In situ nano-sized ZrC/ZrSi composite powder fabricated by a one-pot electrochemical process in molten salts

Abstract

ZrC/ZrSi nanocomposite powders are in situ synthesized from ZrSiO₄ and carbon through a one-pot electrochemical process. The pathway from the precursor of ZrSiO₄/carbon to ZrC/ZrSi composites is investigated by time-dependent electrochemical reduction experiments. The results show that the composite powder involving nano-sized ZrC particles dispersed inside the ZrSi matrix is fabricated through an electrochemical route. The ratio of ceramic phases to metallic phases in the final products can be controlled by adjusting the amount of carbon in the original materials. The electrochemical route in molten salt provides a feasible method for in situ preparation of nano-sized ZrC/ZrSi composite powders at relatively lower temperature.