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.
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页码：375 / 379
页数：5
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