Mechanical alloying of Ti-Ni based materials using the simoloyer

摘要

The production of large quantities of contamination free mechanically alloyed powders from titanium and nickel based materials has proven to be major challenge. Feasibility of such a goal canb e 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 production 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 the large volume units (up to 400 l) based on the same conceptual design. Therefore, experiments have been conducted on blended elemental Ti-Ni compositions in the peoportion Ti-50 Ni, Ti-49.5Ni and Ti-48.5 Ni(at