EXAFS STUDIES ON NANOCRYSTALLINE TUNGSTEN

被引：33

作者：

HAUBOLD, T

KRAUSS, W

GLEITER, H

机构：

[1] Universität des Saarlandes Werkstoffwissenschaften, Saarbrücken, 6600

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 1991年 / 63卷 / 04期

关键词：

D O I：

10.1080/09500839108205998

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanocrystalline materials are polycrystals with typical diameters of the crystallites in the order of 5 to 15 nm, so that about 30 vol.% of the material consists of grain boundaries. EXAFS studies indicate a disordered atomic arrangement in this grain boundary component. An enhanced intensity reduction of the EXAFS oscillations of nanocrystalline W as compared with nanocrystalline Cu suggests the atomic structure of the grain boundaries in nanocrystalline b.c.c. metals differs structurally from those in nanocrystalline f.c.c. metals.

引用

页码：245 / 247

页数：3

共 9 条

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