Abstract:In this study the effects of harder ultrafine Al2O3 particles on the mechanical milling of
ductile Cu flakes (200mesh, 70μm) have been investigated. The small hard Al2O3 particle in the
mixture acted as an effective milling agent not only by inducing a drastic change of the Cu
morphology from flattened flakes to equiaxed crystals but also by reducing the milling time
required for a uniform dispersion of Al2O3 in the Cu matrix. This was more pronounced as the
Al2O3 concentration increased. A critical concentrat… Show more
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