7.8 GPa和1150℃下Fe-Fe3C-Fe3N体系的相关系:对金属饱和地幔中C和N宿主的影响

IF 1.2 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

High Pressure Research Pub Date : 2021-10-02 DOI:10.1080/08957959.2021.1998479

A. N. Kruk, Alexander A. Korablin, A. Sokol, Y. Palyanov

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引用次数: 1

摘要

文摘的等温部分Fe-Fe3C-Fe3N相图7.8的绩点和1150°С由三相的γ铁+ Fe3C +ϵ-Fe3中部(С/ N)和三个阶段字段(γ铁+ Fe3Cγ铁+ϵ-Fe3(С/ N)和Fe3C +ϵ-Fe3(С/ N))有界的三个单相字段γ铁,Fe3C和ϵ-Fe3沿着三角形(С/ N)固体的解决方案。因此,本机铁可以主机碳和氮的γ铁+ Fe3C或γ铁阶段在地幔耗尽挥发物(20 ppm C和1 ppm N)在温度对应∼35 mW / m2热通量,以及Fe3C或ϵ-Fe3(С/ N)阶段如果地幔中挥发物的内容达到250 ppm C和100 ppm N铁碳氮化物具有相当大的稳定性领域即使在低氮浓度在系统模拟本地铁。

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Phase relations in the Fe-Fe3C-Fe3N system at 7.8 GPa and 1150°C: implications for C and N hosts in metal-saturated mantle

ABSTRACT The isothermal section of the Fe-Fe3C-Fe3N phase diagram at 7.8 GPa and 1150°С comprises a three-phase field of γ-Fe + Fe3C + ϵ-Fe3(С/N) in the central part and three two-phase fields (γ-Fe + Fe3C, γ-Fe + ϵ-Fe3 (С/N) and Fe3C + ϵ-Fe3(С/N)) bounded by three single-phase fields of γ-Fe, Fe3C and ϵ-Fe3(С/N) solid solutions along the triangle sides. Thus, native iron can host carbon and nitrogen in the γ-Fe + Fe3C or γ-Fe phases in the mantle depleted in volatiles (20 ppm C and 1 ppm N) at temperatures corresponding to the ∼35 mW/m2 heat flux, and in the Fe3C or ϵ-Fe3(С/N) phases if the contents of volatiles in the mantle reach 250 ppm C and 100 ppm N. Iron carbonitride has quite a large stability field even at low nitrogen concentrations in the system simulating native iron.

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来源期刊

High Pressure Research 物理-物理：综合

CiteScore

3.80

自引率

5.00%

发文量

审稿时长

2 months

期刊介绍： High Pressure Research is the leading journal for research in high pressure science and technology. The journal publishes original full-length papers and short research reports of new developments, as well as timely review articles. It provides an important forum for the presentation of experimental and theoretical advances in high pressure science in subjects such as: condensed matter physics and chemistry geophysics and planetary physics synthesis of new materials chemical kinetics under high pressure industrial applications shockwaves in condensed matter instrumentation and techniques the application of pressure to food / biomaterials Theoretical papers of exceptionally high quality are also accepted.