Mechanically induced self-propagating reaction and consequent consolidation for the production of fully dense nanocrystalline Ti55C45 bulk material

Mechanically induced solid state carbonization

“…At a critical time (172 min), namely the ignition time, the vial's temperature surprisingly increases in a drastic fashion to reach a maximum value of 38.5 C within a very short ball-milling time (8 min), as displayed in Figure 5.2(b). 7 (4.4 h) of ball milling, suggesting the completion of the MSR process, as shown in Figure 5.2(b). After the reaction was completed, the vial's temperature tended to decrease dramatically to approximately 31.…”

“…Complete fcc-SiC alloy powders were obtained after 1,080 ks of milling (300 h). and shear modulus (closed circles) of the consolidated samples, which were obtained by SPS of the milledpowders, on the grain size (closed diamonds) and ball-milling time [7]. The Bragg peaks for this end-product are broad, suggesting the formation of fine grain alloy powders.…”

“…The data were obtained by using a pressure-temperature-measuring system (GTM)[7]. The data were obtained by using a pressure-temperature-measuring system (GTM)[7].…”

Characterization of intermetallic bonded TiC composites prepared by mechanically induced self-sustained reaction

“…Some researchers have also prepared TiC-Ni 3 Al composites using vacuum sintering [7,10], reactive sintering [14,18] and self-propagating high temperature synthesis (SHS) [12,13]. Mechanically induced self-sustaining reactions (MSR) have been used as a powerful manufacturing technique for the synthesis of a great number of novel materials [19][20][21][22][23][24]. This reactive milling method takes advantage of the strong exothermic character of the formation of compounds from chemical elements to promote self-propagating reactions during milling and obtain particulate materials with high purity and homogenous composition.…”

Contamination Effects on Improving the Hydrogenation/Dehydrogenation Kinetics of Binary Magnesium Hydride/Titanium Carbide Systems Prepared by Reactive Ball Milling

“…Moreover, ball milling the MgH 2 with pure metallic catalysts (e.g., Ti, Fe, Ni, Nb, V) [13], intermetallic compounds (e.g., Zr 100− x Ni x , and Ti-based alloys) [14,15,16], metal carbides such as TiC [17], metal oxides such as Nb 2 O 5 [18], metal chlorides such as MgCl 2 [19], rare earth chlorides such as LaCl 3 [20], and nanocomposite Ni/Nb 2 O 5 powders [21] led to remarkable improvement in the hydrogen absorption/desorption kinetics and lowering the thermal stability of MgH 2 . It has been shown by Ismail [20] that the improved hydrogen storage properties of MgH 2 doped with LaCl 3 were due to the catalytic effects of the La-Mg alloy and MgCl 2 .…”