福建冶金2024，Vol.53Issue(3)：36-40,5.
不同时效温度对于含铜钕铁硼磁体微观结构及磁性能影响
The Effect of Different Heat Treatment Temperatures on the Microstructure and Magnetic Properties of Cu Containing Nd-Fe-B Magnets
付刚1
作者信息
- 1. 福建省金龙稀土股份有限公司,福建龙岩 366300||福建省稀土功能材料山海协作创新中心,福建龙岩 366300||福建省稀土功能材料重点实验室,福建龙岩 366300
- 折叠
摘要
Abstract
In recent years,how to further enhance the magnetic properties of Nd-Fe-B magnets on the basis of existing research has become a challenge that field physicians are constantly exploring.This article systematically studied the microstructure and magnetic properties of Nd-Fe-B magnets with different Cu contents subjected to heat treatment at different heat treatment temperatures.Research has shown that when the Cu content in Nd-Fe-B magnets is 0.4 wt% and the secondary heat treatment temperature is 620℃,the magnets achieve the highest coercivity of 19.5 kOe.Through the analysis and characterization of the microstructure,it was found that Nd6Fe13Ga phase was formed at the grain boundaries,which played a good de-coupling role.At the same time,the addition of Cu element is also conducive to the formation of smooth and continuous grain boundaries inside the magnet,which is the main reason for the improvement of the magnetic properties of the magnet.This article provides a feasible solution for reducing the use of heavy rare earth elements and enhancing the magnetic properties of Nd-Fe-B magnets,promoting the commercial application of high-performance Nd-Fe-B magnets while also improving the international competitiveness of corresponding products in China.关键词
Nd-Fe-B/微观结构/晶界/时效温度/Nd6Fe13GaKey words
Nd-Fe-B/microstructures/grain boundary/heat treatment temperature/Nd6Fe13Ga引用本文复制引用
付刚..不同时效温度对于含铜钕铁硼磁体微观结构及磁性能影响[J].福建冶金,2024,53(3):36-40,5.
