A Study on Chemical Short Range Ordering in Pd40Ni40P20 Bulk Metallic Glass by Anomalous X-ray Scattering

被引：1

作者：

Haruyama, Osami ^{[1
]}

Makimura, Takahiro ^{[1
]}

Miyakawa, Tomoki ^{[1
]}

Sugiyama, Kazumasa ^{[2
]}

机构：

[1] Tokyo Univ Sci, Fac Sci & Technol, Noda, Chiba 2788510, Japan

[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

HIGH TEMPERATURE MATERIALS AND PROCESSES | 2010年 / 29卷 / 5-6期

基金：

日本学术振兴会;

关键词：

bulk metallic glass; chemical short range ordering; anomalous x-ray scattering; STRUCTURAL RELAXATION; AMORPHOUS-ALLOYS;

D O I：

10.1515/HTMP.2010.29.5-6.381

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A local change in the amorphous structure of bulk Pd40Ni40P20 glass during the thermal relaxation related to the chemical short-range order (CSRO) was examined by anomalous X-ray scattering (AXS) with energies near Ni and Pd K-absorption edges. The reversible CSRO process was confirmed by electrical resistance and density measurements. The environmental structural analysis around Ni and Pd revealed that the coordination number of Ni-Ni and Pd-Pd like-atom pairs increased with the degree of order formed in the CSRO process, while that of Ni-Pd unlike-atom pair decreased. The present analysis clearly indicates that the reversible CSRO process in the Pd40Ni40P20 bulk glass is inferred to be a local structural change such like the micro-phase separation.

引用

页码：381 / 392

页数：12

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