OBSERVATION BY TEM OF SPONTANEOUS ALLOYING IN NANOMETER-SIZED ATOM CLUSTERS IN THE AU-AL SYSTEM

被引：15

作者：

MORI, H ^{[1
]}

YASUDA, H ^{[1
]}

机构：

[1] OSAKA UNIV,FAC ENGN,DEPT MAT SCI & ENGN,SUITA,OSAKA 565,JAPAN

来源：

JOURNAL OF MICROSCOPY-OXFORD | 1995年 / 180卷

关键词：

ATOM CLUSTERS; SPONTANEOUS ALLOYING; IN-SITU EXPERIMENT; COMPOUND CLUSTERS;

D O I：

10.1111/j.1365-2818.1995.tb03654.x

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

Cluster-size dependence of alloying behaviour in nanometre-sized atom clusters has been studied by transmission electron microscopy, using dusters in the Au-Al system, which forms several intermetallic compounds in the phase diagram, In gold clusters of approximately 6-12 nm mean size, rapid dissolution of aluminium atoms took place and Au2Al or AuAl2 clusters were formed. When the size of gold clusters was increased to approximately 40nm, no such rapid spontaneous alloying occurred. These observations suggest that there exists a critical size of initial gold clusters below which aluminide clusters are successfully formed by spontaneous alloying.

引用

页码：33 / 38

页数：6

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