Influence of the Mechanical Alloying Parameters on the Elaboration of Sic/Al Nanocomposite Powders
The paper presents the experimental work regarding the elaboration of some nanocomposite powders with higher SiC content. For the research, three types of mixtures were prepared: 90SiC-10Al, 70SiC-30Al and 60SiC-40Al using mechanical alloying (MA) technique. The MA was carried out in a vario planetary ball mill Pulverisette 4 for 5 hours using different conditions: - the shock mode (the main disk speed 400 rpm and the planets speed -800 rpm); - the friction mode (the main disk speed 400 rpm and the planets speed 800 rpm). The resulting mixtures was investigated by scanning electron microscopie (SEM), X-ray diffraction pattern (RDX), energy dispersive X-ray analysis (EDAX) and particle size distribution. After 5 hours of MA it is observed that the mixture obtained in the friction mode conditions have a homogenous structure and the particle size distribution is better than the particle size distribution of the mixture obtained in the shock mode conditions.
Ionel Chicinaş and Liviu Brânduşan
C. Nicolicescu et al., "Influence of the Mechanical Alloying Parameters on the Elaboration of Sic/Al Nanocomposite Powders", Materials Science Forum, Vol. 672, pp. 219-222, 2011