Compression of Fe3C to 30 GPa at room temperature

被引：87

作者：

Li, J

Mao, HK

Fei, Y

Gregoryanz, E

Eremets, M

Zha, CS

机构：

[1] Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA

[2] Carnegie Inst Washington, Ctr High Pressure Res, Washington, DC 20015 USA

[3] Cornell Univ, Cornell High Energy Synchrotron Source, Ithaca, NY 14853 USA

来源：

PHYSICS AND CHEMISTRY OF MINERALS | 2002年 / 29卷 / 03期

关键词：

Fe3C; high pressure; phase stability; bulk modulus; EoS;

D O I：

10.1007/s00269-001-0224-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：166 / 169

页数：4

共 19 条

[1] Methanosaeta fibers in anaerobic migrating blanket reactors [J].