THERMOSTIMULATED PROCESSES ON THE SURFACE OF FE-CO-NI NANOSTRUCTURED POWDERS

Abstract

The paper considersphysical and chemical processes at heating in argon stream of Fe-Co-Ni nanostructured powders of different phase compositions, synthesized by method of liquid-phase reduction of aqueous solutions of metal salts in strong alkaline medium by hydrazine hydrate. The composition and amount of adsorbed gases depending on elemental composition and porosity of samples and the character (kinds) of the oxidation products of the powders surface and their thermal transformations are investigated by derivatography method combined with mass spectrometry of gaseous products.

Keywords

• fe-co-ninanopowders
• solid solutions of metals