Titanium borides prepared by self-propagating high-temperature synthesis

Rediscovering the Crystal Chemistry of Borides

“…This method was used to synthesize monoborides of V, Nb, Ta, Cr, and Mo, diborides of Ti, Zr, Hf, Nb, Ta, Cr, and dodecaborides of Zr and Ti. [128,393] SHS reactions have several advantages over previously mentioned reactions as they proceed extremely rapidly and do not require an external source of energy (apart from initiation).…”

“…The samples are usually pressed into cylindrical pellets with the metal acting as the "fuel" and boron as the "oxidizer". [128] The composition of the product of the reaction is highly dependent on the initial stoichiometry as well as the density of the pellet. This method was used to synthesize monoborides of V, Nb, Ta, Cr, and Mo, diborides of Ti, Zr, Hf, Nb, Ta, Cr, and dodecaborides of Zr and Ti.…”

Synthesis of Binary Transition Metal Nitrides, Carbides and Borides from the Elements in the Laser-Heated Diamond Anvil Cell and Their Structure-Property Relations

“…We observed that at pressures between 10 and 11 GPa and very weak laser heating (≈1000 K) ω -titanium and boron reacted immediately (Figure 17). After further laser heating the following phases could be observed: TiB${}_2$, ω -titanium and KCl in its high-pressure CsCl-type structure (pressure medium) are the main phases, while most of the additional reflections could be indexed by Ti${}_2$B${}_5$ (ICDD 06-0528, $P{6}_3/mmc$, a = 2.9331(5) Å and c = 13.910(5) Å [151]). However, as it can be seen in Figure 17, the low intensity of the Bragg reflections of ω -titanium (before and after laser heating) compared to the KCl peaks is due to the very small amount of sample in the X-ray beam with respect to the KCl pressure medium.…”

Synthesis of Novel Electrospun Composite Nano Powders of the Quaternary Ti-Al-O-B System

“…Nanostructured ceramics such as nanoparticles (NPs) and nanofibers (NFs) have drawn much attention in particular applications due to their unique properties such as the high surface area to volume ratio, low density, low heat conductivity, high hardness and excellent toughness [4][5]. The development of multicomponent ceramic products from nanostructured oxides, borides, and borates is an efficient solution for overcoming the hardness, corrosion resistance, high melting point, and abrasive requirements of designed systems [7,8]. Thus, a quaternary Ti-Al-O-B system can logically be used for exhibiting outstanding oxides, borides, and borates of titanium and aluminum components on the nanoscale.…”

“…Titanium borides have stoichiometric diversity in the forms of TiB, TiB2, Ti3B4, Ti2B5 as well as TiB12 [8,9]. Several routes, such as pack cementation, magnetron sputtering, and selfpropagating high-temperature synthesis (SHS), have been developed to produce the titanium borides as well as titanium borate (TiBO3) [10][11][12].…”