Constant and pulse voltage applications in CaWO4 reduction

Date

2010-12-01

Author

Goksu, Orhan Gokce
Karakaya, İshak
Erdoğan, Metehan

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It has been shown that metallic tungsten powder can be obtained by electrochemical reduction of solid CaWO4 in molten CaCl 2-NaCl eutectic mixture at 600°C In this study, constant and pulse voltage electrolysis experiments were performed to optimize reduction kinetics and obtain information about the mechanism of above process. It was found that pulse voltage applications yield faster reduction rates when average voltage of pulse voltage application was the same as constant voltage application. In addition, analysis of the current vs. time graphs of constant and pulse voltage electrolysis studies showed that reduction occurs at potential differences higher than about 2.2 V between CaWO4 cathode and graphite rod anode.

Subject Keywords

CaWO4, Electrochemical reduction, Molten salt, Pulse voltage, Tungsten

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=79952924639&origin=inward
https://hdl.handle.net/11511/106966

Conference Name

EPD Congress 2010 - TMS 2010 Annual Meeting and Exhibition

Collections

Department of Metallurgical and Materials Engineering, Conference / Seminar

Citation Formats

O. G. Goksu, İ. Karakaya, and M. Erdoğan, “Constant and pulse voltage applications in CaWO4 reduction,” presented at the EPD Congress 2010 - TMS 2010 Annual Meeting and Exhibition, Seattle, WA, Amerika Birleşik Devletleri, 2010, Accessed: 00, 2023. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=79952924639&origin=inward.