Superhard solid solutions of diamond and cubic boron nitride

被引：29

作者：

Tang, Mingjun ^{[1
,2
]}

He, Duanwei ^{[1
]}

Wang, Wendan ^{[1
]}

Wang, Haikuo ^{[1
]}

Xu, Chao ^{[1
]}

Li, Fengjiao ^{[1
]}

Guan, Junwei ^{[1
]}

机构：

[1] Sichuan Univ, Inst Atom & Mol Phys, Chengdu 610065, Peoples R China

[2] Chengdu Vocat & Tech Coll, Chengdu 610041, Peoples R China

来源：

SCRIPTA MATERIALIA | 2012年 / 66卷 / 10期

基金：

中国国家自然科学基金;

关键词：

B-C-N; Superhard materials; HPHT sintering; Solid solutions; First-principles; HIGH-TEMPERATURE CONDITIONS; HIGH-PRESSURE; SHOCK SYNTHESIS; PHASES; BC2N; CRYSTALLIZATION;

D O I：

10.1016/j.scriptamat.2012.02.006

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Single-phase BC4N can be formed at high pressure and temperature, starting with either a mixture of diamond and cubic boron nitride or graphite and hexagonal boron nitride. The samples exhibit extreme Vickers hardness (85 +/- 4 GPa), reaching the hardness of single crystal diamond. Within a random solid solution model, the X-ray diffraction patterns of cubic BCxN solid solutions were calculated. The results indicate that the prepared B-C-N materials are continuous solid solutions with a zinc-blende structure. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：781 / 784

页数：4

共 35 条

[1] CUBIC BORON-NITRIDE - DIAMOND MIXED-CRYSTALS [J].

BADZIAN, AR .

MATERIALS RESEARCH BULLETIN, 1981, 16 (11) :1385-1393

[2] Crystal structures and mechanical properties of superhard BC2N and BC4N alloys:: First-principles calculations [J].

Chen, Shiyou ;

Gong, X. G. ;

Wei, Su-Huai .

PHYSICAL REVIEW B, 2008, 77 (01)

[3] Aggregated diamond nanorods, the densest and least compressible form of carbon [J].

Dubrovinskaia, N ;

Dubrovinsky, L ;

Crichton, W ;

Langenhorst, F ;

Richter, A .

APPLIED PHYSICS LETTERS, 2005, 87 (08)

[4] Superior wear resistance of aggregated diamond nanorods [J].

Dubrovinskaia, N ;

Dub, S ;

Dubrovinsky, L .

NANO LETTERS, 2006, 6 (04) :824-826

[5] GENERAL-METHODS FOR GEOMETRY AND WAVE-FUNCTION OPTIMIZATION [J].

FISCHER, TH ;

ALMLOF, J .

JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (24) :9768-9774

[6]

KAGI H, 1996, P 15 AIRAPT INT C, P258

[7]

KAKUDATE Y, 1994, T MRS JAP, V14, P1447

[8] HIGH-PRESSURE SYNTHESIS, CHARACTERIZATION, AND EQUATION OF STATE OF CUBIC C-BN SOLID-SOLUTIONS [J].

KNITTLE, E ;

KANER, RB ;

JEANLOZ, R ;

COHEN, ML .

PHYSICAL REVIEW B, 1995, 51 (18) :12149-12156

[9] SELF-CONSISTENT EQUATIONS INCLUDING EXCHANGE AND CORRELATION EFFECTS [J].

KOHN, W ;

SHAM, LJ .

PHYSICAL REVIEW, 1965, 140 (4A) :1133-&

[10] Synthesis and characterization of a shock-synthesized cubic B-C-N solid solution of composition BC2.5N [J].

Komatsu, T ;

Nomura, M ;

Kakudate, Y ;

Fujiwara, S .

JOURNAL OF MATERIALS CHEMISTRY, 1996, 6 (11) :1799-1803

← 1 2 3 4 →