Pulsed wire discharge is a practical method of nanosize powder synthesis. It has been found that the ambient-gas pressure is a very important factor in determining the average powder size. Dynamic variation of the gas pressure is expected to have special effect on the powder formation process. In our experiment, the dynamic pressure is provided by a high-speed gas-puff. The experimental results have shown that a high-pressure gas is very important in the process of wire explosion in order to avoid electrical …
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