Abstract
Niobium oxycarbide (NbCxO1-x) is an important soluble anode utilized primarily for the electrochemical preparation of metal Nb. Based on thermodynamic analysis, this study elucidates the controllable synthesis of single-phase NbCxO1-x solid solution by the carbothermal reduction of Nb2O5. The effects of synthesis temperature, holding time, forming pressure, and carbon content on the sintering behavior of NbCxO1-x solid solution are investigated. Under the optimum conditions (1400 °C of synthesis temperature, 4 h of holding time, 100 MPa of forming pressure, and 1/7 of molar ratio of Nb2O5 to carbon black), the single-phase NbCxO1-x solid solution with the similar crystal structure to NbC and 0.440 nm of the lattice parameter is obtained. The optimum resistivity of the solid solution is only 52.10 mΩ·cm, which is two orders of magnitude lower than that before sintering. This work provides crucial raw materials for the extraction of niobium by soluble anode electrolysis, improving the efficient electrolysis of niobium.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
