HREM STUDY OF THE MICROSTRUCTURE IN NANOCRYSTALLINE MATERIALS

被引：44

作者：

LI, DX ^{[1
]}

PING, DH ^{[1
]}

YE, HQ ^{[1
]}

QIN, XY ^{[1
]}

WU, XJ ^{[1
]}

机构：

[1] CHINESE ACAD SCI,INST SOLID STATE PHYS,HEFEI 230031,PEOPLES R CHINA

来源：

MATERIALS LETTERS | 1993年 / 18卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/0167-577X(93)90051-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High resolution electron microscopy studies of nanocrystalline Pd and (Fe-0.99, Mo-0.01)(78)Si9B13 indicate that the atomic structures of the grain boundaries consist of both ordered and disordered regions. The microstructure in ordered regions of the grain boundaries shows curved and little distorted appearance. In some areas, however, nanovoids and imperfect or disordered regions are also observed at the grain boundaries. The defects in the grains, such as five-fold twins, edge and 60 degrees dislocations, are also observed. The nature of these defects is similar to those normally observed in conventional coarse-grained polycrystals.

引用

页码：29 / 34

页数：6

共 17 条

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