Effect of the milling time on thermal stability of mechanically alloyed Mg50Ni50 amorphous alloy

被引：1

作者：

Guzman, D. ^{[1
,2
]}

Ordonez, S. ^{[3
]}

Serafini, D. ^{[4
,5
]}

Rojas, P. ^{[6
]}

Aguilar, C. ^{[7
]}

Santander, M. ^{[1
,2
]}

Navea, L. ^{[1
,2
]}

机构：

[1] Univ Atacama, Fac Ingn, Dept Met, Copiapo, Chile

[2] CRIDESAT, Copiapo, Chile

[3] Univ Santiago Chile, Fac Ingn, Dept Ingn Met, Santiago, Chile

[4] Univ Santiago Chile, Fac Ciencias, Dept Fis, Santiago, Chile

[5] Ctr Interdisciplinary Res Mat, Santiago, Chile

[6] Pontificia Univ Catolica Valparaiso, Fac Ingn, Escuela Ingn Mecan, Valparaiso, Chile

[7] Univ Austral Chile, Inst Mat & Proc Termomecan, Fac Ciencias Ingn, Valdivia, Chile

来源：

REVISTA DE METALURGIA | 2009年 / 45卷 / 05期

关键词：

Amorphous; Mechanical alloying; Thermal stability; Hydrogen storage materials; X-ray diffraction; MG;

D O I：

10.3989/revmetalm.0853

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In order to study the relationship between the milling time used in the production of Mg50Ni50 amorphous alloy and its thermal stability, seven amorphous alloys were produced by milling for 20, 25, 30, 35, 40, 50 and 60 h each sample. The obtained powders were morphological and structurally characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and transmission electron microscopy (TEM), respectively. The thermal stability of amorphous alloys was study by differential scanning calorimetry (DSC). Based on the obtained results, it can be concluded that the increase it) the added energy when milling for longer time causes the homogenization of the microstructure with an increase in amorphous phase, which dissolves a larger amount of nickel in its structure. Therefore, the simultaneous crystallization of the Mg2Ni and MgNi2 intermetallic compounds at 345 degrees C can be explained.

引用

页码：375 / 383

页数：9

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