Dissolution Characteristic of Titanium Oxycarbide Electrolysis

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Aiming at the problems of residual anode and free carbon generated in titanium oxycarbide electrolysis (TiC 0.5 O 0.5 ), the phase composition and microstructure of TiC 0.5 O 0.5 were characterized by XRD, SEM, EDS and POM.The results show that: titanium oxycarbide (TiC 0.5 O 0.5 ) with similar crystal morphology and structure could be obtained by carbothermic reduction from TiO 2 and sintering from TiC and TiO, which is composed of 15~21% gray-white titanium carbide, 56~69% yellow titanium oxycarbide and 13~25% aubergine titanium oxycarbide.The grain color of titanium oxycarbide is related to the content of carbon and oxygen.Gray-white titanium carbide contains 20~30% C, yellow titanium oxycarbide 10~50% C and 10~20% O, and aubergine titanium oxycarbide 5~10%C and 25~30% O.The structure of titanium oxycarbide is not uniformity, which results in the formation of residual anode and carbon.The gray-white and aubergine components in titanium oxycarbide are rich in TiC and TiO respectively, which generate free C, CO 2 , Ti 2 O 3 and TiO 2 after electrolysis.[