Journal
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
Volume 34A, Issue 12, Pages 2793-2799Publisher
SPRINGER
DOI: 10.1007/s11661-003-0180-3
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Dehydrogenation of nanocrystalline TiH2, produced by pulverization of commercially available powder, has been examined in detail by a combination of thermal analysis, X-ray diffraction (XRD), and transmission electron microscopy (TEM). The dehydrogenation to form Ti occurs as a two-step process involving the formation of an intermediate phase, Tiff. In-situ experiments on dehydrogenation inside a transmission electron microscope reveal the possibility of a powder-metallurgy process for consolidation of Ti components by vacuum annealing of nanocrystalline TiH2 at similar to0.5T(m), where T-m is the melting point of Ti. Near-full densification of Ti has been achieved by sintering nanocrystalline TiH2 under vacuum at similar to0.5T(m).
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