Equation of state of cubic boron nitride at high pressures and temperatures

Sintering of cubic boron nitride under high pressures and temperatures in the presence of boron carbide as the binding material

Sintering of cubic boron nitride (cBN) was carried out by subjecting fine powders of cBN to high pressures and temperatures (P = 50-60 kb, T = 1200-1500°C ) in the presence of boron carbide as the main binding material together with a small amount of aluminium nitride. The composites were characterized by X-ray diffraction, scanning electron microscopy, FTIR, Raman Spectroscopy and microhardnes...

Thermal equation of state of cubic boron nitride: Implications for a high-temperature pressure scale

Alexander F. Goncharov,1,2 Jonathan C. Crowhurst,2 John K. Dewhurst,3 Sangeeta Sharma,4 Chrystele Sanloup,5 Eugene Gregoryanz,1,6 Nicolas Guignot,7 and Mohamed Mezouar7 1Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road NW, Washington, DC 20015, USA 2Lawrence Livermore National Laboratory, University of California, 7000 East Avenue, Livermore, California 94551, ...

Performance of Cubic Eos at High Pressures

Cet article prŽsente une Žvaluation des performances des Žquations d'Žtats (EoS) cubiques pour la prŽvision des comportements de phases des mŽlanges hyperbares. Il met en Žvidence un certain nombre de problmes auxquels il devrait tre rŽpondu d'une manire coopŽrative. Les points relatifs ˆ la dŽfinition des paramtres des EoS, tels que les coefficients d'interaction, les propriŽtŽs critiques ...

Fluids at high pressures and temperatures

With high pressures, supercritical fluids can be studied over a very wide range of density. Fluids with strongly interacting polar molecules for example water are of particular interest. Results for several thermophysical properties are discussed. Density, dielectric constant and self—ionization of water have been determined or predicted to 1000 °C. Beyond 20 GPa very hot water appears to becom...

Thermal Equation of State of bcc Tantalum to High Pressures and Temperatures