| A new process, named ERC (Evaporation and Rapid Condensation) method, had been developed for the production of a large amount of isolated ultrafine particles(UFP). This method is based on a phenomenon of evaporation and condensation, but can be also said to be a kind of enhanced evaporation technique because of sucking the metal vapor generated from a molten metal. Therefore, in this paper, in order to investigate whether ERC method can be applied in preparation of alloy ultrafine particles, Fe-Ni alloys were tested. And the shape, the content and the morphology of obtained UFP were observed by TEM-EDX, SEM-EDX and X-ray diffraction analysis. Most of the obtained alloy particles were spherical, and the mean particle size was 15㎚. And the content of the obtained Fe-Ni alloy UFP almost agreed with that of equilibrium vapor of mother alloy, and the lattice parameter of the Fe-Ni alloy UFP was equal to that of mother alloy. Therefore, it was found that this method can be applied in preparation of alloy UFP. |
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