Synthesis and characterization of particle-reinforced Ni/Al2O3 nanoconiposites

被引：67
|
作者：
Shao, I
Vereecken, PM
Chien, CL
Searson, PC
Cammarata, RC
机构：
[1] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA
[2] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA
来源：
JOURNAL OF MATERIALS RESEARCH | 2002年 / 17卷 / 06期
关键词：
D O I：
10.1557/JMR.2002.0210
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nanocomposite Ni/Al2O3 films were electrodeposited from a suspension of Al2O3 nanoparticles in aqueous nickel sulfamate solution. The volume fraction of particles incorporated increased with electrode rotation rate and decreased with deposition current density. The composition, microstructure, hardness, and magnetic properties of these nanocomposite films were characterized. The mechanical strengthening due to particle dispersion in the films was interpreted by considering an Orowan dislocation bowing mechanism. The coercivity of the films increased with increasing particle concentration in the film. The saturation magnetization showed a weak dependence on particle concentration.
引用
收藏
页码：1412 / 1418
页数：7
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