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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: New Method of the Preparation of Coarse-Grained Cobalt Powder
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 541-543)
Author(s): Xiao-ming Fu, The 3rd Department of Suqian College, Suqian 223800, P. R. China
Zai-zhi Yang, The 3rd Department of Suqian College, Suqian 223800, P. R. China
Jun Fan, The 3rd Department of Suqian College, Suqian 223800, P. R. China
Abstract: Cobalt powder is prepared with CoC2O4.2H2O in the argon gas. Cobalt oxide is oxidized with cobalt powde in the air, and cobalt powder is reduced with cobalt oxide in the hydrogen gas (Rate of purity: 99.99%, dew point: -40℃). Cobalt powder is oxidized into cobalt oxide in the air again. The samples are characterized with the laser particle size distribution measuring instrument. The results show that coarse-grained cobalt powder is obtained through the third circulatory oxidation and the third reduction. The percentage of the particle size distribution of coarse-grained cobalt powder is 77.66% between 9μm and 15μm.
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