Synthesis of boron carbide from its elements up to 13 GPa

Boron carbide under torsional deformation: Evidence of the formation of chain vacancies in the plastic regime

“…Three such experiments have been performed under a pressure of about 5 GPa, with various degrees of rotation of the anvils : 90°, 180°and 270°(table 1). The pressure was determined by the value of the primary pressure on the press, which had been calibrated using in situ experiments at synchrotrons with pressure calibrants, similar to the calibration method for the conventional Paris-Edinburgh press [37,38,39]. In all of our experiments, only the lower anvil was rotated, while the upper one was kept fixed.…”

Advanced Boron Carbide Matrix Nanocomposites Obtained from Liquid-Charge: Focused Review

“…Optimal values of some technological parameters for synthesizing boron carbide from its elements were determined by varying the process conditions, including pressure (2-5 GPa), temperature (1400-2000 • C), and the relative concentrations of the reactants [26]. The formation temperature of a stoichiometric amorphous mixture of boron and carbon was compared to that of beta-rhombohedral boron mixtures with amorphous carbon/graphite; this comparison detected the temperature's dependence on the reactants chosen and pressure applied.…”

Performance of glucose, sucrose and cellulose as carbonaceous precursors for the synthesis of B4C powders

“…Therefore, acquiring the technical knowledge of B4C production, achieving its manufacturing technology from available raw materials, as well as using cost-effective fabrication methods are of special importance [8][9][10]. There are various techniques for synthesis of B4C ceramics including carbothermal reduction [11,12], synthesis from its elemental constituents [13,14], magnesiothermal reduction [15,16], chemical vapor deposition (CVD) [17][18][19], and synthesis from polymeric raw materials [20][21][22]. Among the above methods, the synthesis using constituent elements is not cost-effective due to the expensive pure raw materials required and is merely a research-based methodology for synthesis in the laboratory [23].…”