Hydrogenation of Ti–12Mg blending powder during mechanical milling in liquid media containing hydrogen

Abstract

The authors manufactured the metal hydrides (Ti_0·88Mg_0·12)H₂ and (Ti_0·88Mg_0·12)H_0·7 by a very easy and cheap way using the mechanical milling of Ti–12Mg blending powder in liquid milling media such as isopropyl alcohol, hexane and heptane as hydrogen sources. The powder was analysed by X-ray diffraction (XRD) and convergent beam electron diffraction (CBED) patterns parallel with the chemical analysis by EDX and ion coupled plasma (ICP) measurements. The hydriding reaction began when the mechanically milled particle achieved nanometre size. (Ti_0·88Mg_0·12)H₂ was manufactured in isopropyl alcohol and hexane media, and (Ti_0·88Mg_0·12)H_0·7 in heptane, while the Ti–12Mg blending powder milled in argon atmosphere formed the solid solution of hexagonal close packed (hcp) structure.

Keywords:

• TIH2
• HYDROGENATION
• METAL HYDRIDE
• CONVERGENT BEAM ELECTRON DIFFRACTION