Quantitative analysis of phases formed in the aluminothermic reduction of Ta2O5 by plasma

Autor:	A.G.P. Silva, R.A. Brito, F.F.P Medeiros, Marcio W.D. Mendes, Uilame Umbelino Gomes, Clodomiro Alves
Rok vydání:	2008
Předmět:	Chemistry Scanning electron microscope Mechanical Engineering Metals and Alloys Tantalum Analytical chemistry chemistry.chemical_element Plasma Mechanics of Materials Phase (matter) X-ray crystallography Materials Chemistry Metal powder Dendrite (metal) Quantitative analysis (chemistry)
Zdroj:	Journal of Alloys and Compounds. 464:122-126
ISSN:	0925-8388
DOI:	10.1016/j.jallcom.2007.09.099
Popis:	A novel technique of aluminothermic reduction of tantalum oxide is developed to produce tantalum in form of powder. In this technique, hydrogen plasma is used to trigger the reaction in a plasma reactor. The reacted powders were analyzed by XRD and SEM. Rietveld method was used to quantify the phases present in the product of reaction. The results showed that a tantalum rich phase with a dendritic structure, typical of molten phases is formed. This phase occurred in significant amounts onto the surface and in bulk of the reacted grains.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cd0251ebd9a448f64abbf56f34d66e78 https://doi.org/10.1016/j.jallcom.2007.09.099 Zobrazit plný text záznamu Full Text from ScienceDirect