International Journal of Chemical Studies
Vol. 1, Issue 2 (2013)
Issues and Challenges in the Preparation of Niobium for Strategic Applications
Author(s): T. Satish kumar*, T. Balaji, S. Rajesh kumar, Arbind kumar, T. L. Prakash
Abstract: Niobium is well known refractory metal having high melting point (2468 °C) and boiling point (4742 °C). Owing to its corrosion resistance at high temperature with relatively lower density, it is a preferred material for space applications. One of the most crucial applications of Nb has been found in aviation and aerospace industry where Nb based alloys are being used in a big way in rocket nozzles, rocket thrusters, satellite antennae, etc. In addition, niobium in the form of powder is widely used in the fabrication of solid electrolyte capacitors. Although the reduction process is reported and commercialized, in the present paper few attempts are made to study the process parameters to obtain higher niobium yield, purity and economically viable process. It is reported that the yield of niobium depends up on the temperature, purity of niobium pent oxide, aluminum content and refractory lining thickness of crucible.
Fig. 1: XRD spectrum of phase pure niobium pentoxide
Fig. 2: Molten charge after aluminothermic reduction process
Pages: 86-89 | 998 Views 7 Downloads
How to cite this article:
T. Satish kumar*, T. Balaji, S. Rajesh kumar, Arbind kumar, T. L. Prakash. Issues and Challenges in the Preparation of Niobium for Strategic Applications. Int J Chem Stud 2013;1(2):86-89.