STUDYING CRYSTALLIZATION OF AMORPHOUS METAL-ALLOYS BY TIME-RESOLVED EXAFS

被引：6

作者：

DACAPITO, F

BOSCHERINI, F

BUFFA, F

VLAIC, G

PASCHINA, G

MOBILIO, S

机构：

[1] IST NAZL FIS NUCL,LAB NAZL FRASCATI,I-00044 FRASCATI,ITALY

[2] DIPARTIMENTO SCI CHIM,I-09124 CAGLIARI,ITALY

[3] UNIV LAQUILA,DIPARTIMENTO SCI CHIM,I-67100 LAQUILA,ITALY

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1993年 / 156卷

关键词：

D O I：

10.1016/0022-3093(93)90024-R

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The first complete observation of a temperature-induced crystallization process using time-resolved X-ray absorption spectroscopy (XAS) is presented. The sub-T(g) reordering of a Ni60B40 amorphous alloy has been investigated, yielding a complete characterization from both the structural and kinetical points of view. This enabled the sharpening and shift of the Ni-Ni radial distribution function during the annealing to be quantified and the type of crystallization process to be determined; it was found to be an interface-governed growth of pre-existing nuclei. Theoretical estimates of the parameters of the crystallization kinetics confirm this interpretation of the data.

引用

页码：571 / 574

页数：4

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