Abstract
Powders with different compositions of the binary Ti–Al system were prepared by indirect reactive ball milling (IRBM). During milling, nanocrystalline powders of titanium and titanium–aluminium hydrides were obtained using methanol as a reactive control agent. The formation of these hydride compounds due to the reaction Ti–Al–methanol improved grain size reduction of the powders. Light metal hydrides were detected by X-ray diffraction (XRD) and thermogravimeter and differential thermal analysis (TG–DTA) techniques even after very short milling times (4 h). The use of methanol as a hydrogen source during ball milling seems to be an inexpensive and easy way to prepare nanocrystalline and amorphous ductile metal based alloys in considerably shorter milling times and without an atmosphere of hydrogen gas.
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