Structural and magnetic properties of mechanically alloyed Fe81Si9B6Nb3Cu1 powders

被引：0

作者：

Gupta, R

Enzo, S

Frattini, R

Hernando, A

Marin, P

Mulas, G

Perin, A

Principi, G

机构：

[1] Univ Padua, Dipartimento Ingn Meccan, Settore Mat, I-35131 Padua, Italy

[2] Ist Nazl Fis Mat, Trieste, Italy

[3] Univ Sassari, Dipartimento Chim, I-07100 Sassari, Italy

[4] Univ Venezia, Dipartimento Chim Fis, I-31023 Venezia, Italy

[5] Inst Magnetismo Aplicado, Madrid 28230, Spain

[6] DA Univ, Sch Instrumentat, Indore 452001, India

来源：

INTERNATIONAL JOURNAL OF NON-EQUILIBRIUM PROCESSING | 1998年 / 10卷 / 3-4期

关键词：

ball milling; nanocrystalline; Mossbauer; alpha-Fe; coercive field;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanocrystalline powders of Fe81Si9B6Nb3Cu1 composition have been synthesised by high-energy ball milling and characterised by means of X-ray and neutron diffraction, Mossbauer spectroscopy and magnetic tests. The diffraction and Mossbauer measurements point out the progressive formation of a bcc alpha-Fe(Si, Nb, Cu, B) disordered solid solution with average particle size in the nanometre range. In addition, for the specimens mechanically treated for prolonged times, the Mossbauer spectra show an ultrafine non-stoichiometric Fe3+xSi1-x crystalline phase. The coercive field of the powder after long milling time is higher than that of the partially crystallized metallic glass of similar composition. The annealing at 973 K in inert atmosphere of the samples mechanically alloyed for long times mainly produces the Fe3Si crystalline phase and small amounts of borides and Fe-Nb aggregates.

引用

页码：283 / 296

页数：14

共 15 条

[1] IMPROVING THE VALIDITY OF HYPERFINE FIELD DISTRIBUTIONS FROM MAGNETIC-ALLOYS .1. UNPOLARIZED SOURCE [J].