真空メカノフュージョンによるAl2O3/Cu複合粉の作製

概要

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Using vacuum mechanofusion system developed previously, we coated spherical Al2O3 powders of 45 micron diameter with Cu powders of 0.2 micron diameter. The effects of the atmospheric pressure on the mechanofusion behavior of Al2O3/Cu particles were disscussed on the base of the particle size distribution data and the SEM observation results on the appearance of the mechanofusion particles. The mechanofusion behavior of Al2O3/Cu particles depends on the atmospheric pressure, i.e., the volume percent of Cu composite particles decreases as the pressure become lower. The composite particles mechanofused under the pressure of 1.0×105SPa became dark due to oxydation. At the pressure of 5.3×10-2Pa, the composite particles indicated intrinsic Cu metallic color.
社団法人粉体粉末冶金協会の論文