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

被引：656

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

页码：1336 / 1339

页数：4

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