Production of Uniformly-sized Spherical Powder by Plasma Rotating Electrode Process and Its Applications to Some Intermetallics Powders
Production of Uniformly-sized Spherical Powder by Plasma Rotating Electrode Process and Its Applications to Some Intermetallics Powders
复制标题
等离子旋转电极法生产尺寸均匀的球形粉末及其在某些金属间化合物粉末中的应用
DOI：
10.2497/jjspm.39.1137
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
K. Isonishi
中科院分区：
文献类型：
--
作者：
M. Tokizane;K. Isonishi
Atomization mechanism and production of atomized high quality powder by Plasma Rotating Electrode Process (PREP) were discussed. The atomization mechanism changed from direct drop formation (DDF) to film disintegration (FD), through ligament disintegration (LD) depending on either the changes in material parameters or those in the operation parameters. DDF mechanism yielded the highest quality powder particles consisting of exceedingly spherical shape, uniform size and clean without contamination. Therfore, this powder seemed to be suitable for compaction by Wing or near-net-shape forming. The results of the study were applied for producing PREPed powders of some intermetallics such as Ti-aluminides and TiNi. The compacts of those powders showed improved mechanical properties compared with the conventionally processed materials.
