Production of tantalum by aluminothermic reduction in plasma reactor

Tantalum is a very interesting metal for industry due to some properties such as high melting point, ductility, high corrosion resistance, besides attractive electric and thermal conductivities. In the present work, the production of metallic tantalum (Ta) has been investigated through the reduction...

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Bibliographic Details
Published in:International journal of refractory metals & hard materials 2008-09, Vol.26 (5), p.433-437
Main Authors: de Brito, R.A., Medeiros, F.F.P., Gomes, U.U., Costa, F.A., Silva, A.G.P., Alves, C.
Format: Article
Language:English
Subjects:
Aluminothermic reduction
Mechanical alloying
Plasma
Scanning electron microscopy
Tantalum
X-ray diffraction
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Summary:Tantalum is a very interesting metal for industry due to some properties such as high melting point, ductility, high corrosion resistance, besides attractive electric and thermal conductivities. In the present work, the production of metallic tantalum (Ta) has been investigated through the reduction of Ta 2O 5 by aluminothermic reduction technique (ATR), using hydrogen plasma to trigger the exothermal reaction. Ta 2O 5 and Al mixtures were previously processed by mechanical alloying during 2, 6 and 10 h. The results obtained by XRD and SEM show that is possible to obtain a compound rich in tantalum through the technique of aluminothermic reduction by plasma.
ISSN:0263-4368
2213-3917
DOI:10.1016/j.ijrmhm.2007.09.008