Ultimate Metastable Solubility of Boron in Diamond: Synthesis of Superhard Diamondlike BC5

被引：302

作者：

Solozhenko, Vladimir L. ^{[1
]}

Kurakevych, Oleksandr O. ^{[1
]}

Andrault, Denis ^{[2
]}

Le Godec, Yann ^{[3
]}

Mezouar, Mohamed ^{[4
]}

机构：

[1] Univ Paris 13, LPMTM, CNRS, F-93430 Villetaneuse, France

[2] Univ Clermont Ferrand, LMV, F-63000 Clermont Ferrand, France

[3] Univ Paris 06, IMPMC, F-75015 Paris, France

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

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 01期

关键词：

EQUATION-OF-STATE; CUBIC BC2N; BEHAVIOR; PHASES;

D O I：

10.1103/PhysRevLett.102.015506

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Here, we report the synthesis of cubic BC5 (c-BC5), the diamondlike B-C phase with the highest boron content ever achieved, at 24 GPa and about 2200 K, using both a laser-heated diamond anvil cell and large-volume multianvil apparatus. The synthesized phase is low compressible (bulk modulus of 335 GPa), conductive, and exhibits extreme Vickers hardness (71 GPa), unusually high for superhard materials fracture toughness (9.5 MPa m(0.5)), and high thermal stability (up to 1900 K); this makes it an exceptional superabrasive and promising material for high-temperature electronics.

引用

页数：4

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