Abstract
The phase composition and structure of highly dispersed composite iron powders with Pt, Ag, Au, Cu, and Zn, produced by a thermochemical method, were investigated by the methods of x-ray phase and x-ray structure analysis. The effect of certain additions to the initial solutions, in particular multiatomic alcohols with different numbers of OH-groups, on the particle size and concentration of α-Fe, Fe3C, Fe3O4 in the powders, and also on the structural parameters of the principal component, α-Fe, was determined. The presence of Fe3C and Fe3O4 in the iron powders explained their high corrosion resistance in spite of their small particle size (0.1-0.01 μm). The structural properties of the composite powders with metal additions indicated the presence of a mosaic substructure on the microlevel.
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