In situ observation of the formation of TiC from the elements by neutron diffraction

Stability field of the high-(P, T) Re2C phase and properties of an analogous osmium carbide phase

“…Small pieces of rhenium foil (Alpha Aesar, purity 99.99%) with a thickness of 25 m and graphite served as starting materials. Both materials had been characterised earlier [1,12]. A ruby was loaded to allow pressure determination by the ruby fluorescence method.…”

Reaction of titanium with carbon in a laser heated diamond anvil cell and reevaluation of a proposed pressure-induced structural phase transition of TiC

“…We have shown in an earlier paper [7] that a DFT-based model using the generalised gradient approximation, a plane wave basis set and ultrasoft pseudopotentials satisfactorily reproduced structures and properties of titanium and TiC. We therefore continued these calculations here.…”

“…We used NaCl as a pressure medium and for thermal insulation. Titanium foil (Alpha Aesar, purity 99.99%) with a thickness of 25 m and graphite, which has been characterised earlier [7] served as starting materials. Rubies were loaded to allow pressure determination by the ruby fluorescence method.…”

“…These two space groups have the same reflection conditions. In a recent in situ neutron scattering study by Winkler et al [7] only the cubic ı-phase was observed.…”

“…The synthesis of TiC at ambient pressure has been studied with various methods (see summary in Winkler et al [7]) and the physical properties of TiC at ambient pressure have been extensively documented [1]. In contrast to these numerous studies at low and high temperatures, little is known about the pressure-dependence of structure-property relations.…”