PREPARATION OF Pt-Fe ALLOY NANPARTICLES BY ELECTRICAL WIRE EXPLOSION PROCESS

摘要

The ease of preparing homogeneous mixtures, suspensions, and slurries makes weakly aggregated nanopowders very attractive for powder technologies. Various techniques have been developed to prepare metal nanopowders, such as gas-phase chemical reaction, spray pyrolysis, laser ablation, flame processing, and vapor deposition. Among the many techniques used to fabricate nanocrystalline powders, electrical wire explosion (EWE) is a promising method for producing a number of materials with new properties. By applying a large impulse current, a thin metal or alloy wire in certain gas and/or liquid media can explode. It is known that nanometer sized particles can be obtained by the EWE method, when it was conducted in liquid media. This method is particularly advantageous to produce nanoparticles in high yield and shorter reaction time.