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Synthesis of Vanadium Carbide by Mechanical Activation Assisted Carbothermic Reduction
Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia. Pyrometallurgy Department, Minerals Technology Division, Central Metallurgical R&D Institute (CMRDI), P.O. Box 87, Cairo 11865, Egypt.
Pyrometallurgy Department, Minerals Technology Division, Central Metallurgical R&D Institute (CMRDI), P.O. Box 87, Cairo 11865, Egypt.
Pyrometallurgy Department, Minerals Technology Division, Central Metallurgical R&D Institute (CMRDI), P.O. Box 87, Cairo 11865, Egypt.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Minerals and Metallurgical Engineering. Pyrometallurgy Department, Minerals Technology Division, Central Metallurgical R&D Institute (CMRDI), P.O. Box 87, Cairo 11865, Egypt.ORCID iD: 0000-0002-2358-7719
2020 (English)In: Materials, ISSN 1996-1944, E-ISSN 1996-1944, Vol. 13, no 19, article id 4408Article in journal (Refereed) Published
Abstract [en]

Vanadium carbide is known, for its hardness and other unique properties, as a refractory material. The synthesis of vanadium carbide is always associated with the utilization of expensive active metals, such as aluminum, calcium and magnesium, as a reducing agent to extract the vanadium metal from its corresponding oxide, followed by carbidization. The carbidization of reduced vanadium requires a complicated process and elevated temperature. Mechanical activation to synthesize vanadium carbide from its corresponding oxide and carbon source represents a promising, straightforward and less energy-intensive route. In the present study, vanadium carbide is synthesized by the carbothermic reduction of a mechanically activated mixture of V2O5 and carbon black as reducing agents without any additives. The reduction process is monitored by means of thermogravimetric analysis. The reduction products are characterized by X-ray diffraction and field emission scanning electron microscope. It is found that V8C7 with an average crystallite size of 88 nm can be synthesized from a V2O5-C mixture after milling for 15 h and further heating at 1050 °C for 1 h in an inert atmosphere.

Place, publisher, year, edition, pages
MDPI, 2020. Vol. 13, no 19, article id 4408
Keywords [en]
mechanical activation, carbothermic reduction, vanadium oxide, carbon black, vanadium carbide
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-81095DOI: 10.3390/ma13194408ISI: 000586723400001PubMedID: 33023271Scopus ID: 2-s2.0-85093967177OAI: oai:DiVA.org:ltu-81095DiVA, id: diva2:1475098
Note

Validerad;2020;Nivå 2;2020-10-12 (alebob)

Available from: 2020-10-12 Created: 2020-10-12 Last updated: 2020-11-26Bibliographically approved

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Ahmed, Hesham

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