Abstract
The mechanical alloying (MA) method is a powerful and practical process to fabricate advanced materials with unique properties. Developing an effective milling process to produce high-quality powder suitable for scale-up is one of the main issues for the MA method. This study introduces a new high energy ball milling technique, the horizontal attrition ball milling (HAM). The milling effect of the HAM is superior to that of the conventional planetary and attrition milling techniques in the size reduction of particles (fragmentation) and the impact of milling (mechanical strength). The ultrafine (Ti0.7,W0.3)C–Ni cermet powders can be obtained by the HAM since (Ti0.7,W0.3)C particle growth is effectively inhibited during the carbothermal reduction. Sintered (Ti0.7,W0.3)C–Ni cermet by the HAM has excellent mechanical properties (hardness and fracture toughness). This study demonstrates that the newly designed HAM is a practical method for synthesizing ultrafine ceramic and composite powders appropriate to produce structural ceramics and composites that have excellent mechanical properties.
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