Nd60Fe30-xZrxAl10(x=5,10,15,20)合金的制备及磁性能研究

Preparation and Study of Magnetic Property for Nd60Fe30-xZrxAl10 (x=5,10,15 and 20) Alloys

关键词:  软磁  饱和磁化强度  非晶

Key words:  soft magnet  saturation magnetization  amorphous

摘要:

分别采用电弧熔炼和机械合金化法制备Nd₆₀Fe_30-xZr_xAl₁₀(x=5,10,15,20)晶态和纳米非晶态合金,并利用X射线衍射仪、振动样品磁强计等对制备的晶态合金和纳米非晶态合金的结构及其磁性能进行分析,研究Fe和Zr相对含量的变化对合金相的组成及磁性能的影响。结果表明:Nd₆₀Fe_30-xZr_xAl₁₀(x=5,10,15,20)合金晶态及纳米非晶态合金均显示软磁性;对于晶态样品,随着Zr含量的增加,样品的磁化强度逐步降低;对于纳米非晶态合金,随着Zr含量的增加,合金的饱和磁化强度降低;相同成分的纳米非晶态合金的饱和磁化强度高于相应的晶态合金的饱和磁化强度。Nd₆₀Fe₂₀Zr₁₀Al₁₀混合粉末球磨100 h后达到了完全非晶化,说明Nd₆₀Fe₂₀Zr₁₀Al₁₀有较好的非晶形成能力。

Abstract:

Crystalline and nano-amorphous Nd₆₀Fe_30-xZr_xAl₁₀ (x=5, 10, 15 and 20) alloys were prepared by arc melting and mechanical alloying, respectively.The evolution of microstructures and magnetic properties for the alloys were investigated by X-ray diffraction (XRD) and Vibrating Sample Magnetometer (VSM).The results indicate that both of crystalline and nano-amorphous Nd₆₀Fe_30-xZr_xAl₁₀ (x=5, 10, 15, 20)alloys exhibit soft magnetic properties.The saturation magnetization of the alloys decreases when Fe is substituted by Zr.The saturation magnetizations of nano-amorphous alloys are larger than those of the corresponding crystalline alloy.Nd₆₀Fe₂₀Zr₁₀Al₁₀ mixture powder is fully amorphization after ball-milling for 100 hours, indicating that Nd₆₀Fe₂₀Zr₁₀Al₁₀ exhibits high amorphous forming ability.