PREPARATION OF COBALT AND NICKEL NANO-POWDERS BY THE THERMAL DECOMPOSITION OF HYDRAZIDOCARBONATES

Jadran Maček, Borut Založnik, Barbara Novosel and Marjan Marinšek

Faculty of Chemistry and Chemical Technology, University of Ljubljana, Ljubljana, Slovenia
 

ABSTRACT

The preparation of nanosize cobalt and nickel metal powders and powders of solid solutions of cobalt and nickel from the thermal decomposition of N2H5[M(n)(N2H3COO)n+1]·H2O and the intermediate M(n)(N2H3COO)n·N2H4 obtained during this decomposition is described and discussed here. In an inert or reducing atmosphere these compounds decompose to metal particles of 50 to 70 nm in size. These particles are, in turn, composed of even smaller particles 5 to 7 nm in size. The advantages, disadvantages and possible ways of implementing this method for the preparation of nanosize products are discussed.