| 摘要 |
A method of processing a metallic material includes introducing an electrically conductive metallic material comprising at least one of a metal and a metallic alloy into a furnace chamber maintained at a low pressure relative to atmospheric pressure. A first electron field having a first area of coverage is generated using at least a first ion plasma electron emitter, and the material within the furnace chamber is subjected to the first electron field to heat the material to a temperature above a melting temperature of the material. A second electron field having a second area of coverage smaller than the first area of coverage is generated using a second ion plasma electron emitter. At least one of any solid condensate within the furnace chamber, any solidified portions of the electrically conductive metallic material, and regions of a solidifying ingot to the second electron field, is subjected to the second electron field, using a steering system. |
