Defect studies in Fe-Cu alloys prepared by electrodeposition

被引：15

作者：

Roy, MK ^{[1
]}

Subrahmanyam, VS ^{[1
]}

Verma, HC ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India

来源：

PHYSICS LETTERS A | 2004年 / 328卷 / 4-5期

关键词：

iron-based alloys; electrodeposition; defects; Mossbauer spectroscopy; positron annihilation lifetime technique;

D O I：

10.1016/j.physleta.2004.06.015

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Two iron-based metastable Fe-Cu alloys, one rich in iron, namely, Fe72Cu28 and the other rich in copper, namely, Cu90Fe10, in powder form are prepared using simultaneous electrodeposition of Fe and Cu from a common bath. Mossbauer spectroscopy and positron annihilation lifetime techniques are used to study the defects in these alloys. The samples present large concentrations of vacancy clusters made of at least 6 monovacancies. These seem to play a crucial role in stabilizing the alloy despite positive heat of formation. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：375 / 379

页数：5

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