Reaction of rhenium and carbon at high pressures and temperatures

被引：43

作者：

Juarez-Arellano, Erick A. ^{[1
]}

Winkler, Bjoern ^{[1
]}

Friedrich, Alexandra ^{[1
]}

Wilson, Dan J. ^{[1
]}

Koch-Mueller, Monika ^{[2
]}

Knorr, Karsten ^{[1
,3
]}

Vogel, Sven C. ^{[4
]}

Wall, James J. ^{[4
]}

Reiche, Helmut ^{[4
]}

Crichton, Wilson ^{[5
]}

Ortega-Aviles, Mayahuel ^{[6
]}

Avalos-Borjav, Miguel ^{[7
]}

机构：

[1] Univ Frankfurt, Inst Geowissensch, D-60438 Frankfurt, Germany

[2] Geoforschungszentrum Potsdam, Sekt 4 1, D-14473 Potsdam, Germany

[3] Univ Kiel, Inst Geowissensch Mineral Kristallog, D-24098 Kiel, Germany

[4] Los Alamos Natl Lab, Lujan Ctr, Los Alamos, NM 87545 USA

[5] ESRF, F-38043 Grenoble, France

[6] LMEUAR, IMP, Mexico City 07730, DF, Mexico

[7] Univ Nacl Autonoma Mexico, CCMC, Ensenada 2681, Baja California, Mexico

来源：

ZEITSCHRIFT FUR KRISTALLOGRAPHIE | 2008年 / 223卷 / 08期

关键词：

Carbides; High pressures and temperatures; Synchrotron radiation; Analytical electron microscopy; Density functional theory (DFT); X-ray diffraction; Powder diffraction structure analysis;

D O I：

10.1524/zkri.2008.0054

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

A combined X-ray diffraction, EELS and DFT study of the reaction of rhenium with carbon at high-(P, T) conditions up to P-max = 67 GPa and T-max = 3800 K is presented. A hexagonal rhenium carbide, ReCx, was identified as the stable phase at high-(P, T) conditions. A composition of ReC0.5 is proposed. No evidence for a cubic ReC polymorph with rocksalt structure, as suggested in the literature, or for any other phase was found at the P-T conditions explored. A preliminary P-T rhenium-carbon phase diagram has been derived and properties such as bulk moduli and elastic stiffness coefficients were obtained.

引用

页码：492 / 501

页数：10

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