Abstract
The electrodeposition of tungsten has been investigated in the molten salt systems and at 450°C. Voltammetric results showed that the reduction of tungsten species is an irreversible process. Electrodeposits were mixtures of α‐ and β‐tungstens, the former being the thermodynamically stable phase. α‐Tungsten exhibited the shape of cubic crystallites which tended to grow larger, whereas β‐tungsten always had a crystal size smaller than 1 μm. The β‐tungsten was formed during the initial stage of electrodeposition, irrespective of the substrate material, and remained predominant at high current densities or in pulsed electrolysis. It is likely that the phase transition of β‐tungsten to α‐tungsten occurs when the size of the β‐tungsten crystallites becomes larger than a critical value.
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.
