Abstract
The authors produced ultra-fine particles by wire explosion of iron base alloy wires in air, and of titanium wire in nitrogen atmosphere. The characteristics of these particles were studied. The results obtained are as follows:
(1) The particles obtained by wire explosion of wires of mild steel, Fe-Ni alloy, permalloy, and titanium were under 0.5μ in size and spherical.
(2) With the increase of charged voltage, the particle size and the oxygen content decreased.
(3) By wire explosion of iron based alloys in air, fine particles of these oxides, Fe2O4, NiFe2O4 and NiO were obtained.
(4) By wire explosion of titanium wire in nitrogen atmosphere, TiN-TiO2 composite particles were obtained.
