EXAFS STUDY OF MECHANICALLY ALLOYED NI-TA POWDER

被引：0

作者：

ZSCHECH, E

NOVGORODOV, BN

ZBIRAL, J

JANGG, G

ULLRICH, HJ

机构：

[1] SOVIET ACAD SCI,INST CATALYSIS,NOVOSIBIRSK 690090,USSR

[2] VIENNA TECH UNIV,INST CHEM TECHNOL ANORGAN STOFFE,A-1060 VIENNA,AUSTRIA

[3] TECH UNIV DRESDEN,INST WERKSTOFFWISSENSCH,O-8027 DRESDEN,GERMANY

来源：

MIKROCHIMICA ACTA | 1992年 / 107卷 / 3-6期

关键词：

EXAFS SPECTROSCOPY; X-RAY SCATTERING; MECHANICAL ALLOYING; SHORTRANGE ORDER;

D O I：

10.1007/BF01244477

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Amorphous Ni-Ta was obtained by mechanically alloying pure crystalline powders of nickel and tantalum. Structural changes in the local atomic arrangement effected by the mechanical treatment were studied by X-ray scattering and EXAFS spectroscopy. Both X-ray scattering and EXAFS data represent the destruction of long-range order with increasing milling time, i.e., the crystalline-to-amorphous transition. In contrast to an EXAFS study on the Ni-Ti system, our analysis does not confirm the presence of chemical short-range order.

引用

页码：235 / 243

页数：9

共 17 条

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