FINELY DIVIDED FE-CO-NI POWDERS MADE BY A THERMOCHEMICAL METHOD

It is shown to be possible to make finely divided Fe-Co-Ni powders wit h given physicochemical properties. Iron, cobalt, and nickel oxalates have been made by chemical methods. Hydrogenous media have been used i n the thermal decomposition of the iron oxalates to give finely divide d powder that are nonpyrophoric and corrosion resistant and which have high contents of the metallic phase and given magnetic properties. Th ese powders have been used in sealing composites for pipelines, and al so as fillers in lacquers and magnetic liquids for general purposes.