Terapascal static pressure generation with ultrahigh yield strength nanodiamond

被引：160

作者：

Dubrovinskaia, Natalia ^{[1
]}

Dubrovinsky, Leonid ^{[2
]}

Solopova, Natalia A. ^{[1
,2
]}

Abakumov, Artem ^{[3
,9
]}

Turner, Stuart ^{[3
]}

Hanfland, Michael ^{[4
]}

Bykova, Elena ^{[2
]}

Bykov, Maxim ^{[2
]}

Prescher, Clemens ^{[5
]}

Prakapenka, Vitali B. ^{[5
]}

Petitgirard, Sylvain ^{[2
]}

Chuvashova, Irina ^{[1
,2
]}

Gasharova, Biliana ^{[6
]}

Mathis, Yves-Laurent ^{[7
]}

Ershov, Petr ^{[8
]}

Snigireva, Irina ^{[4
]}

Snigirev, Anatoly ^{[4
,8
]}

机构：

[1] Univ Bayreuth, Crystallog Lab, Mat Phys & Technol Extreme Condit, D-95440 Bayreuth, Germany

[2] Univ Bayreuth, Bayer Geoinst, D-95440 Bayreuth, Germany

[3] Univ Antwerp, Electron Microscopy Mat Sci EMAT, Groenenborgerlaan 171, B-2020 Antwerp, Belgium

[4] European Synchrotron Radiat Facil, BP 220, F-38043 Grenoble, France

[5] Univ Chicago, Ctr Adv Radiat Sources, Chicago, IL 60437 USA

[6] Karlsruhe Inst Technol, Inst Photon Sci & Synchrotron Radiat, POB 3640, D-76021 Karlsruhe, Germany

[7] Karlsruhe Inst Technol, ANKA Synchrotron Radiat, POB 3640, D-76021 Karlsruhe, Germany

[8] Immanuel Kant Balt Fed Univ, RU-236041 Kaliningrad, Russia

[9] Skolkovo Inst Sci & Technol, Ctr Electrochem Energy Storage, Moscow 143026, Russia

来源：

SCIENCE ADVANCES | 2016年 / 2卷 / 07期

关键词：

POLYCRYSTALLINE DIAMOND; X-RAY; DIFFRACTION; COMPRESSION; ELASTICITY; HARDNESS; CARBONS; ANVILS; PHASE;

D O I：

10.1126/sciadv.1600341

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Studies of materials' properties at high and ultrahigh pressures lead to discoveries of unique physical and chemical phenomena and a deeper understanding of matter. In high-pressure research, an achievable static pressure limit is imposed by the strength of available strong materials and design of high-pressure devices. Using a high-pressure and high-temperature technique, we synthesized optically transparent microballs of bulk nanocrystalline diamond, which were found to have an exceptional yield strength (similar to 460 GPa at a confining pressure of similar to 70 GPa) due to the unique microstructure of bulk nanocrystalline diamond. We used the nanodiamond balls in a double-stage diamond anvil cell high-pressure device that allowed us to generate static pressures beyond 1 TPa, as demonstrated by synchrotron x-ray diffraction. Outstanding mechanical properties (strain-dependent elasticity, very high hardness, and unprecedented yield strength) make the nanodiamond balls a unique device for ultrahigh static pressure generation. Structurally isotropic, homogeneous, and made of a low-Z material, they are promising in the field of x-ray optical applications.

引用

页数：12