Effect of Synthesis Conditions on Size Characteristics of Nickel and Cobalt Nanostructured Powders

Abstract:

In this paper one of the numerous chemical methods to obtain nanostructured powders of nickel and cobalt by reduction of mix of sparingly soluble metal carbonates with hydrazine hydrate as the reducing agent is considered. The influence of preparation conditions (concentration of the reducing agent, temperature, magnetic field) on size-characteristics of powders is studied. Size of nickel nanocrystallites varies in range 17-23 nm, the range for cobalt crystallites is 23-33 nm. It is found that the optimal temperature range is 80-95 °C to reduce carbonates of nickel and cobalt by the hydrazine hydrate. Application of magnetic field during the reduction of the crystal nickel carbonate to metal nickel helps to change the shape and size characteristics of the powders.

• Periodical: Key Engineering Materials (Volume 683)
• Pages: 181-186
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.683.181
• Online since: February 2016
• Authors: Polina Lapsina*, Evgeniy Kagakin, Anna N. Popova, Alexander Vladimirov, Victor I. Sachkov
• Keywords: Cobalt, Hydrazine Hydrate, Nanostructured Powders, Nickel, Poorly Soluble Salt

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