線爆発による粉末の生成とその特性(第1報)
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The formation of powders in an electric discharge with heavy current through a metallic wire in the atmosphere was studied, and the characteristics of the resulting powder were examined.<BR>The results obtained were as follows.<BR>(1) The powders obtained at the optimum conditions had a wide particle size distribution. Coarse particles were spherical similar to atomized ones.<BR>(2) With increasing discharging voltage, particles of molybdenum powder became fine. As for tungsten, the above mentioned tendency was not confirmed with X-ray diffraction line breadth alone.<BR>(3) In the atmosphere, metallic powder was collected mainly in an acryl case, and the particle size had a wide distribution.<BR>However, in a vacuum cleaner, the ultra fine oxide powder (aerosol) was mainly collected.<BR>(4) The alloy powder was formed easily from alloy wire by wire-explosion method.<BR>(5) As for molybdenum, with increasing discharging voltage, the latice spacing increased.
- 社団法人 粉体粉末冶金協会の論文
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