Co-Ni纳米合金的制备与表征

罗驹华

特种合金 | 浏览量 : 0 下载量: 212 CSCD: 1

导出
分享
收藏
专辑

Co-Ni纳米合金的制备与表征
Preparation and Characterization of Co-Ni Alloy Nanoparticles
2007年第12期页码：974-975
纸质出版日期： 2007 ，
DOI：

扫描看全文

[1]罗驹华.Co-Ni纳米合金的制备与表征[J].特种铸造及有色合金,2007(12):974-975+902.

Luo Juhua. Preparation and Characterization of Co-Ni Alloy Nanoparticles[J]. Special Casting & Nonferrous Alloys, 2007,(12):974-975.
[1]罗驹华.Co-Ni纳米合金的制备与表征[J].特种铸造及有色合金,2007(12):974-975+902. DOI：

Luo Juhua. Preparation and Characterization of Co-Ni Alloy Nanoparticles[J]. Special Casting & Nonferrous Alloys, 2007,(12):974-975. DOI：

摘要

以NaBH4为还原剂、油酸为分散剂、采用液相还原法制备了Co-Ni纳米合金

利用XRD、SEM和VSM对试样进行了表征。研究结果表明

在N2气保护下

经500℃焙烧

试样由无定形态转化为晶态;颗粒呈球形

平均粒径为35nm;Co-Ni合金的抗氧化能力较强

在常温下不易被氧化;饱和磁化强度为83.7A.m2/kg

矫顽力趋近于零

呈现超顺磁性。

Abstract

Co-Ni nano-alloy was fabricated using NaBH4 as reducer and oleic acid as dispersion agent by liquid reduction method

and its structures

particle features

oxidation behavior and magnetic properties were investigated by XRD

SEM and VSM.The results revealed that the samples are converted from amorphous alloy into crystal alloy after baking at 500 ℃ with N2 atmosphere

in which the particles exhibit spheroid with 35 nm in average size.The Co-Ni alloy with saturation magnetization of 83.7 e mu·g-1 and coercives forces tending to zero possesses higher oxidation-resistant ance and superaramagnetization at room temperature.