Synthesis of binary nano-composite of Ti50Zr50 and its characterization

Reversible hydrogen storage properties and favorable co-doping mechanism of the metallic Ti and Zr co-doped sodium aluminum hydride

“…It indicates that the grains size of the Ti and Ti-hydride in the composite with Zr introduced together with Ti as co-dopants becomes smaller, compared with those using Ti dopant alone, according to the FWHM of XRD measurement. The trend of size reduction of Ti ball-milled with an addition of Zr has previously been reported elsewhere [15]. This phenomenon may be ascribed to the synergistic effect of the two elements with very similar properties such as Ti and Zr here belonging to the same group in the Periodic Table. Fig .…”

Zirconium alloys produced by recycling zircaloy tunings

“…The predominance of the cold welding process over the fracturing process in these two ductile metals is responsible for this behavior. Although the modification of process parameters might reduce the contribution of the cold welding mechanism, previous studies [14,15] have indicated the necessity of using a control agent. This evidence suggests that one powerful alternative to avoid cold welding is to modify the ductile-ductile nature of the starting mixture.…”

“…In a later work using different milling atmospheres (N 2 , O 2 and H 2 ), these authors demonstrated that the amorphization of pure metals exhibiting complete solid solubility, such as Zr and Ti, is hard or practically impossible: the final amorphous product contained the component of the atmosphere [13]. In a subsequent work, Ti 50 Zr 50 nanocomposite was successfully produced by roller vibration milling at room temperature, using stearic acid as control agent [14]. However, part of Zr and Ti powders remain unreacted.…”

“…The TiZr foams obtained have a bimodal porous structure, with macropores between 200 and 500 lm and micropores of several microns. In these previous studies [12][13][14][15], the starting materials were pure Zr and Ti sponges or powders.…”

Mechanical Milling: a Top Down Approach for the Synthesis of Nanomaterials and Nanocomposites

“…It was observed that for all milling times the decrease of the grain sizes led to an increase in the BET surface area. Wang et al [92] reported the synthesis of stable Ti 50 Zr 50 binary nano-composite of grain size about 7.6 nm by the roller vibration milling with a the Synthesis of Nanomaterials and Nanocomposites batch volume about 170 g at room temperature. The composite remained the basic hexagonal feature, but the axial ratio was much smaller than that of the ideal hexagonal close-packed structure and the standard value of Ti and Zr.…”