Synthesis and evaluation of hardness and sliding wear resistance of electrodeposited nanocrystalline Ni-Fe-W alloys

被引：37
|
作者：
Sriraman, KR
Raman, SGS [1 ]
Seshadri, SK
机构：
[1] Indian Inst Technol, Dept Met & Mat Engn, Madras 600036, Tamil Nadu, India
[2] Tata Motors, Pune, Maharashtra, India
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2006年 / 22卷 / 01期
关键词：
electrodeposition; nanocrystalline coatings; nanostructure; nickel-iron-tungsten alloys; inverse Hall-Petch; sliding wear;
D O I：
10.1179/174328406X79243
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The present work involves synthesis, characterisation and evaluation of hardness and sliding wear resistance of electrodeposited nanocrystalline Ni-Fe-W alloys. The crystallite size reduced with an increase in current density owing to an increase in the amount of alloying elements (Fe and W). Ni-Fe-W alloy with 23 at.-% Fe and 1.3 at.-% W plated at 0.1 A cm(-2) exhibited the maximum hardness of 563 HV. The alloys exhibited a direct Hall-Petch relation above a crystallite size of 12 nm and an inverse Hall-Petch relation below 12 nm. The wear resistance of the alloys increased with a reduction in the crystallite size in the direct Hall-Petch region and decreased in the inverse Hall-Petch region. Ni-Fe-W coatings with 23 at.-% Fe and 1.3 at.-% W plated at 0.1 A cm(-2) exhibited superior wear resistance.
引用
收藏
页码：14 / 20
页数：7
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