Characterization of Commercially Pure Ti Powders Prepared by Cryogenic Milling |
| J. Kozlík, J. Stráský, P. Harcuba, I. Ibragimov, M. Janeček
Department of Physics of Materials, Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic |
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| Commercially pure Ti Grade 2 was prepared by cryogenic attritor milling in liquid argon under different processing conditions. Two types of milling balls: stainless steel milling balls and tungsten carbide balls were employed. The effect of processing parameters on particle size and morphology, contamination, and powder microhardness was investigated. The powder particles changed their shape from spherical to a disc/plate during milling. Reduction of particle size was only moderate, depended on time of milling and was enhanced by using tungsten carbide balls. Milling procedure increases concentration of oxygen and nitrogen, which is critical in case of titanium. Milling in liquid nitrogen is not feasible and processing conditions of milling in liquid argon must be carefully selected. |
DOI:10.12693/APhysPolA.134.783 PACS numbers: 81.05.Bx, 81.20.Ev, 81.40.Cd, 81.40.Ef |