Volume 18, Issue 2 (June 2021)                   IJMSE 2021, 18(2): 1-7 | Back to browse issues page

‎ 10.22068/ijmse.2006

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The Effect of Temperature on the Purity of Nano-Scale Tantalum Powder Produced from Its Scrap by Reaction with Magnesium and Calcium
Gholam Hussein Borhani , Saeed Reza Bakhshi , Sadegh Soltani
Abstract:   (7255 Views)
In this study, Ta powder was produced from Ta scarp via chemical processes using Mg and Ca powders. At first, Tantalum scraps were converted to Tantalum oxide (Ta2O5) at 1100˚C in an oxygen atmosphere. Tantalum oxide was reduced to Tantalum powder with Mg in a vacuum environment at 950 to 1200˚C for 3 hours. The obtained Ta powders further were reacted with Ca at 950˚C for 5 hours in a vacuum atmosphere. The powders were analyzed through X-ray diffraction patterns (XRD), scanning electron microscopy (SEM), as well as oxygen measurement. The results show that the average particles size of the produced Ta powders is about 58 nm with oxygen contents of 250 ppm.
Keywords: tantalum, refractory metal, magnesium, recovery process, magnesiothermic reduction
Full-Text [PDF 2180 kb]   (3094 Downloads)    
Type of Study: Research Paper | Subject: Ceramics
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