Phase relations in Fe-Ni-C system at high pressures and temperatures

Journal Article · Tue Oct 23 00:00:00 EDT 2012 · Physics and Chemistry of Minerals

DOI:https://doi.org/10.1007/s00269-010-0396-x· OSTI ID:1049569

Narygina, O; Dubrovinsky, L S; Miyajima, N; McCammon, C A; Kantor, I Yu; Mezouar, M; Prakapenka, V B; Dubrovinskaia, N A; Dmitriev, V ^[1]

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1. Bayreuth

We performed comparative study of phase relations in Fe_1-x Ni_x (0.10 ≤ x ≤ 0.22 atomic fraction) and Fe_0.90Ni_0.10-x C_x (0.1 ≤ x ≤ 0.5 atomic fraction) systems at pressures to 45 GPa and temperatures to 2,600 K using laser-heated diamond anvil cell and large-volume press (LVP) techniques. We show that laser heating of Fe,Ni alloys in DAC even to relatively low temperatures can lead to the contamination of the sample with the carbon coming from diamond anvils, which results in the decomposition of the alloy into iron- and nickel-rich phases. Based on the results of LVP experiments with Fe-Ni-C system (at pressures up to 20 GPa and temperatures to 2,300 K) we demonstrate decrease of carbon solubility in Fe,Ni alloy with pressure.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
• Sponsoring Organization: FOREIGN
• OSTI ID: 1049569
• Journal Information: Physics and Chemistry of Minerals, Vol. 38, Issue (3) ; 2011; ISSN 0342-1791
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
58 GEOSCIENCES
ALLOYS
CARBON
CONTAMINATION
DIAMONDS
HEATING
IRON
LASERS
SOLUBILITY