Research on Magnetic Property of Nd2Fe14B/α-Fe Nanocomposite Under Different Roller Speeds

Maoyuan Liu, Lei Chen
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Abstract

Nano-composite permanent magnetic material is a new type permanent magnetic material, and it is the synthesis of soft and hard magnetic phase within nanoscale. On the basis of exchange coupling hard magnetizing theory, nano-composite permanent magnetic material can at the same time have high residual magnetization intensity of soft magnetic phase and high coerccivity of hard magnetic phase, and is expected to develop into new generation high performance permanent magnetic material. Nevertheless, magnetic energy product of nano-composite permanent deriving from experiment differs greatly from theoretic value, and this is mainly due to fairly great difference between micro- structure of material and theoretical model. In this paper, the constituent is taken as (Nd, Pr, Dy)2(Fe, Nb)14B/α-Fe, the fusant rapid quenching method is adopted to research the impact of different roller speeds to magnetic property, through result of VSM, XRD and SPM, magnetic property, phase composition and micro structure of alloy are analyzed.
不同辊速下Nd2Fe14B/α-Fe纳米复合材料磁性能研究
纳米复合永磁材料是一种新型的永磁材料,是在纳米尺度上软磁相和硬磁相的合成。基于交换耦合硬磁化理论,纳米复合永磁材料可以同时具有高软磁相剩余磁化强度和高硬磁相矫顽力,有望发展成为新一代高性能永磁材料。然而,实验得到的纳米复合永磁体的磁能积与理论值相差很大,这主要是由于材料的微观结构与理论模型存在较大差异。本文以成分为(Nd, Pr, Dy)2(Fe, Nb)14B/α-Fe,采用熔体快速淬火法研究不同轧辊转速对合金磁性能的影响,通过VSM、XRD和SPM分析合金的磁性能、相组成和显微组织。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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