SUPERHARD AND ELASTIC CARBON NITRIDE THIN-FILMS HAVING FULLERENE-LIKE MICROSTRUCTURE

被引：659

作者：

SJOSTROM, H

STAFSTROM, S

BOMAN, M

SUNDGREN, JE

机构：

[1] Department of Physics, Linköping University

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.75.1336

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

CNx films were found to have a distorted graphitelike microstructure consisting of buckled and curved basal planes using high-resolution electron microscopy. Nanoindentation showed an elastic recovery of 85%, and a hardness of similar to 60 GPa. Based on detailed quantum chemical calculations and photoelectron spectroscopy, the observed structure is proposed to consist of a network of buckled sp(2)-hybridized CNx planes, cross-linked by sp(3)-hybridized bonds. The buckling is shown to be due to the incorporation of pentagons in the basal planes, giving rise to a fullerenelike microstructure.

引用

收藏

页码：1336 / 1339

页数：4

相关论文

共 24 条

[1] SELF-CONSISTENT-FIELD WAVE FUNCTIONS FOR HOLE STATES OF SOME NE-LIKE AND AR-LIKE IONS [J].

BAGUS, PS .

PHYSICAL REVIEW, 1965, 139 (3A) :A619-&

[2]

BHUSHAN B, 1991, HDB TRIBOLOGY MAT CO, pCH4

[3] THE DEVELOPMENT AND USE OF QUANTUM-MECHANICAL MOLECULAR-MODELS .76. AM1 - A NEW GENERAL-PURPOSE QUANTUM-MECHANICAL MOLECULAR-MODEL [J].

DEWAR, MJS ;

ZOEBISCH, EG ;

HEALY, EF ;

STEWART, JJP .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1985, 107 (13) :3902-3909

[4] A method for interpreting the data from depth-sensing indentation instruments [J].

Doerner, M. F. ;

Nix, W. D. .

JOURNAL OF MATERIALS RESEARCH, 1986, 1 (04) :601-609

[5] HIGH-RESOLUTION ELECTRON-MICROSCOPY STUDIES OF A MICROPOROUS CARBON PRODUCED BY ARC-EVAPORATION [J].

HARRIS, PJF ;

TSANG, SC ;

CLARIDGE, JB ;

GREEN, MLH .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1994, 90 (18) :2799-2802

[6] EFFICIENT OPTIMIZATION OF LARGE-SCALE MCSCF WAVE-FUNCTIONS WITH A RESTRICTED STEP ALGORITHM [J].

JENSEN, HJA ;

JORGENSEN, P ;

AGREN, H .

JOURNAL OF CHEMICAL PHYSICS, 1987, 87 (01) :451-466

[7] EXPERIMENTAL AND THEORETICAL EQUATION OF STATE OF CUBIC BORON-NITRIDE [J].

KNITTLE, E ;

WENTZCOVITCH, RM ;

JEANLOZ, R ;

COHEN, ML .

NATURE, 1989, 337 (6205) :349-351

[8] TRANSFORMATION OF C-60 FULLERENES INTO A SUPERHARD FORM OF CARBON AT MODERATE PRESSURE [J].

KOZLOV, ME ;

HIRABAYASHI, M ;

NOZAKI, K ;

TOKUMOTO, M ;

IHARA, H .

APPLIED PHYSICS LETTERS, 1995, 66 (10) :1199-1201

[9] NANO-INDENTATION STUDIES OF ULTRAHIGH STRENGTH CARBON NITRIDE THIN-FILMS [J].

LI, D ;

CHUNG, YW ;

WONG, MS ;

SPROUL, WD .

JOURNAL OF APPLIED PHYSICS, 1993, 74 (01) :219-223

[10] STRUCTURAL-PROPERTIES OF A 3-DIMENSIONAL ALL-SP2 PHASE OF CARBON [J].

LIU, AY ;

COHEN, ML ;

HASS, KC ;

TAMOR, MA .

PHYSICAL REVIEW B, 1991, 43 (08) :6742-6745