Abstract
A novel electrochemical deoxidation process for Ti in the magnesium chloride−holmium chloride (MgCl2−HoCl3) system was developed. The reaction mechanism was proposed on the basis of the E-pO2− diagram constructed in this study and the experimental results. Metallic Mg was electrodeposited on a Ti cathode to remove O in the form of O2− from Ti via electrolysis conducted in molten MgCl2−HoCl3, with C and Ti as the anode and cathode, respectively. The activity of the generated O2− (i.e., aO2−) in the system was effectively maintained at a very low value by the generation of holmium oxychloride (HoOCl) and/or the effusion of COx gas from the anode. By applying a voltage ranging from 2.1 to 3.0 V between the cathode and anode at 1173 K, the O concentration in Ti was effectively deoxidized to below 1000 mass ppm O. The deoxidation capability of this process was maintained even after the addition of MgO into the system as an additional source of O2−. This novel deoxidation method can be used to recycle large quantities of Ti scrap with high O concentration.
Sign-in/Register to access full text options 
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.
