Cubic boron nitride as a primary calibrant for a high temperature pressure scale

Journal Article · Mon Jun 16 00:00:00 EDT 2008 · High Pressure Res.

DOI:https://doi.org/10.1080/08957950701659726· OSTI ID:1007608

Goncharov, A F; Singeikin, S; Crowhurst, J C; Ahart, M; Lakshtanov, D; Prakapenka, V; Bass, J; Beck, P; Tkachev, S N; Zaug, J M; Fei, Y ^[1]

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1. UIUC

We present results establishing a new high pressure scale at high temperature based on the thermal equation of state and elastic properties of cubic boron nitride (cBN). This scale is derived from simultaneous measurements of density and sound velocities at high pressure and temperature independent of any previous pressure scale. The present results obtained at room temperature to 27 GPa suggest the validity of the current ruby scale (within {+-}4% at 100 GPa). At high temperature, data obtained at 16 GPa to 723 K are in fair agreement with the thermal equation of state of cBN reported in our previous work. We have also shown that cBN can serve as a convenient pressure gauge in X-ray and optical studies using the laser heated diamond anvil cell.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
• Sponsoring Organization: USDOE
• OSTI ID: 1007608
• Journal Information: High Pressure Res., Vol. 27, Issue (4) ; 2007; ISSN 0895-7959
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

36 MATERIALS SCIENCE
BORON NITRIDES
EQUATIONS OF STATE
ELASTICITY
CALIBRATION STANDARDS
PRESSURE RANGE GIGA PA
TEMPERATURE RANGE 0400-1000 K
CUBIC LATTICES