| 摘要 |
<p>The invention relates to a process for the production of submicron particles ( 26 ) and comprises the steps of: (i) placing first and second electrodes, ( 6, 10 ) in a volume of coolant, such that the electrodes (6, 10) are mutually spaced, (ii) passing an electrical current across the electrodes to generate an electrical arc ( 24 ) between them, (iii) maintaining a stable arc ( 24 ) by controlling the relative spacing between the two electrodes ( 6, 10 ) to melt or evaporate and separate material from at least one of the electrodes ( 6, 10 ) such that droplets of said material are formed, and (iv) quenching said droplets to form said submicron particles ( 26 ) of the material in the coolant. The invention also relates to a powder coating method and to an apparatus for performing the methods of the invention.</p> |
