Compression of Fe3C to 30 GPa at room temperature

J Li, HK Mao, Y Fei, E Gregoryanz, M Eremets, CS Zha

Research output: Contribution to journalArticlepeer-review

Abstract

Polycrystalline Fe3C (cementite) was compressed in a neon pressure medium to 30.5 GPa at 300 K using diamond-anvil cell techniques. Angular dispersive X-ray diffraction of Fe3C was measured using monochromatic synchrotron radiation and imaging plates. No phase transition was observed up to the highest pressure studied. The pressure-volume data were fitted to a third-order Birch-Murnaghan equation of state. With V-0 constrained to a measured value of 155.28 Angstrom(3), the best fit yielded a 300-K isothermal bulk modulus K-0 = 174 +/- 6 GPa, and its pressure derivative at constant temperature K-0' = (partial derivativeK(0)/partial derivativeP)(T) = 4.8 +/- 0.8.

Original languageEnglish
Pages (from-to)166-169
Number of pages4
JournalPhysics and Chemistry of Minerals
Volume29
Issue number3
DOIs
Publication statusPublished - 1 Apr 2002

Keywords

  • Fe3C
  • high pressure
  • phase stability
  • bulk modulus
  • EoS
  • PRESSURE
  • EQUATION
  • STATE
  • CALIBRATION
  • SOLIDS
  • CARBON
  • MEDIA
  • NEON
  • CORE

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