Phase diagram of carbon and the factors limiting the quantity and size of natural diamonds

Blank Vladimir D.; Churkin Valentin D.; Kulnitskiy Boris A.; Perezhogin Igor A.; Kirichenko Alexey N.; Denisov Viktor N.; Erohin Sergey V.; Sorokin Pavel B.; Popov Mikhail Yu

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Phase diagram of carbon and the factors limiting the quantity and size of natural diamonds

机译：碳相和限制天然钻石数量和大小的因素

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Phase diagrams of carbon, and those focusing on the graphite-to-diamond transitional conditions in particular, are of great interest for fundamental and applied research. The present study introduces a number of experiments carried out to convert graphite under high-pressure conditions, showing a formation of stable phase of fullerene-type onions cross-linked by sp(3)-bonds in the 55-115 GPa pressure range instead of diamonds formation (even at temperature 2000-3000 K) and the already formed diamonds turn into carbon onions. Our results refute the widespread idea that diamonds can form at any pressure from 2.2 to 1000 GPa. The phase diagram built within this study allows us not only to explain the existing numerous experimental data on the formation of diamond from graphite, but also to make assumptions about the conditions of its growth in Earth's crust.

机译：碳的相图，特别是专注于石墨到钻石过渡条件的那些对基本和应用研究具有很大的兴趣。本研究介绍了在高压条件下转化石墨的许多实验，表明在55-115GPa压力范围内通过SP（3）张力的富勒烯型洋葱的稳定相的形成而不是钻石形成（即使在2000-3000 k温度下），已经形成的钻石变成碳洋葱。我们的结果反驳了钻石可以在2.2到1000 GPa的任何压力下形成钻石的广泛想法。本研究内建立的相位图允许我们不仅可以解释来自石墨的钻石的现有众多实验数据，还可以对其地壳生长的条件做出假设。

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来源
《Nanotechnology》 |2018年第11期|共8页
作者
Blank Vladimir D.; Churkin Valentin D.; Kulnitskiy Boris A.; Perezhogin Igor A.; Kirichenko Alexey N.; Denisov Viktor N.; Erohin Sergey V.; Sorokin Pavel B.; Popov Mikhail Yu;
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作者单位

Technol Inst Superhard &

Novel Carbon Mat Cent Naya Str 7a Moscow 142190 Russia;

Technol Inst Superhard &

Novel Carbon Mat Cent Naya Str 7a Moscow 142190 Russia;

Technol Inst Superhard &

Novel Carbon Mat Cent Naya Str 7a Moscow 142190 Russia;

Technol Inst Superhard &

Novel Carbon Mat Cent Naya Str 7a Moscow 142190 Russia;

Technol Inst Superhard &

Novel Carbon Mat Cent Naya Str 7a Moscow 142190 Russia;

Technol Inst Superhard &

Novel Carbon Mat Cent Naya Str 7a Moscow 142190 Russia;

Technol Inst Superhard &

Novel Carbon Mat Cent Naya Str 7a Moscow 142190 Russia;

Technol Inst Superhard &

Novel Carbon Mat Cent Naya Str 7a Moscow 142190 Russia;

Technol Inst Superhard &

Novel Carbon Mat Cent Naya Str 7a Moscow 142190 Russia;

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原文格式 PDF
正文语种 eng
中图分类特种结构材料;
关键词
phase diagram of carbon; onions; graphite; diamond; high pressure;

机译：碳的相图;洋葱;石墨;钻石;高压;

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专利

1. Phase diagram of carbon and the factors limiting the quantity and size of natural diamonds [J] . Blank Vladimir D., Churkin Valentin D., Kulnitskiy Boris A., Nanotechnology . 2018,第11期

机译：碳相和限制天然钻石数量和大小的因素
2. Influence of Atomic Size Factors on the Phase Stability of Laves Phase in Nb-Cr-Ni-Al and Nb-V-Ni-Al Phase Diagrams [J] . Yamanouchi Takuya, Miura Seiji Materials transactions . 2018,第4期

机译：原子尺寸因子对Nb-Cr-Ni-Al和Nb-V-Ni-Al相图中Laves期相稳定性的影响
3. Vortex phase diagram and J_c limiting factor in high T_c Bi_2Sr_2Ca_2Cu_3O_10/Ag superconducting tapes [J] . Qiang Li, H. J. Wiesmann, M. Suenaga, Applied Physics Letters . 1995,第5期

机译：高T_c Bi_2Sr_2Ca_2Cu_3O_10 / Ag超导带中的涡旋相位图和J_c限制因子
4. The phase diagram of bulk carbon extrapolated to nanometer-sized carbon clusters [C] . N. Pineau, J.H. Los, G. Chevrot, CARBON'09;Annual world conference on carbon;World conference on carbon . 2009

机译：外推到纳米碳簇的散装碳的相图
5. Chemistry of nanoscale carbon materials: Gas-phase purification of single-wall carbon nanotubes, synthesis of nanoscale carbon nitrides, and nanodiamonds in meteorite carbon with related diamond surface chemistry. [D] . Zimmerman, John Lynn. 2000

机译：纳米碳材料的化学：单壁碳纳米管的气相纯化，陨石碳中纳米碳氮化物和纳米金刚石的合成以及相关的金刚石表面化学。
6. Phase Diagram and Transformations of Iron Pentacarbonyl to nm Layered Hematite and Carbon-Oxygen Polymer under Pressure [O] . Young Jay Ryu, Minseob Kim, Choong-Shik Yoo -1

机译：压力下五羰基铁的相图和相转变为纳米层状赤铁矿和碳氧聚合物
7. State-of-the-art models for the phase diagram of carbon and diamond nucleation [O] . Ghiringhelli, Luca M., Valeriani, C., Los, J. H., 2009

机译：最先进的碳和钻石相图模型核
8. Phase Equilibria Investigation of Binary, Ternary, and Higher Order Systems. Part Ix. Calculation of Thermodynamic Quantities from Phase Diagrams [R] . Rudy, E. 1970

机译：二元，三元和高阶系统的相平衡研究。第I部分。从相图计算热力学量

Phase diagram of carbon and the factors limiting the quantity and size of natural diamonds

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