Mechanical Alloying Using Cycle Operation -A New Way to Synthesize CMB-Materials

摘要

The production of large quantities of contamination free mechanically alloyed powders has proven to be major challenge. Feasibility of such a goal can be carried out, at laboratory level, by any milling device like the very common planetary ball mill. In this case however, the possibility of a subsequent scaling up for larger porduction is hindered by the intrinsic limits of a planetary ball mill design. on the contrary the Simoloyer(Zoz-horizontal rotary ball mill) can be experimented at laboratory level using small volume chamber-units(0.25, 0.5, and 21) and, for industrial production, using large volume units(up to 400 1) based on the same conceptual design. A lot of the mechanically alloyed advanced materials show a critical milling behaviour due to their ductility. To be able to process these kind of powders nevertheless, milling agents or/and deep temeprature milling have been applied in the past. Today these difficulies and limits are solved by the cycle operation procedure using the so called Operation Cycle and discharging Cycle for the processing. The present paper will focus on the results of several experiments on titanium, nickel, silver and aluminum based Materials. This is investigated by chemical analysis, by scanning electron microscopy and X-ray diffraction. A porved powder yield over 80