Magnetic performance and microstructure of NdFeB sintered magnet by diffusing Tb10Pr90-(Cu,Al,Ga) alloys

钕磁铁 矫顽力 微观结构 磁铁 材料科学 合金 扩散 晶界扩散系数 冶金 晶界 分析化学(期刊) 凝聚态物理 热力学 化学 物理 色谱法 量子力学
作者
Tengfei Wu,Shuai Cao,Mingpeng Kou,Yuheng Xie,Guangfei Ding,Shuai Guo,Bo Zheng,Renjie Chen,Minglong Zhong,Aru Yan
出处
期刊:Journal of Alloys and Compounds [Elsevier BV]
卷期号:934: 167888-167888 被引量:23
标识
DOI:10.1016/j.jallcom.2022.167888
摘要

Commercial NdFeB sintered magnets were processed by grain boundary diffusion process with serial Tb10Pr90-x(Cu,Al,Ga)x (at%) alloys, in order to study the influence of rare earths and non-rare earth metallic elements proportion change on the diffusion effect for alloy diffusion sources with low Tb content. The coercivity increased significantly from 14.20 kOe to 24.10 kOe, 25.46 kOe and 25.36 kOe respectively for the diffused magnets treated with Tb10Pr80(Cu,Al,Ga)10, Tb10Pr60(Cu,Al,Ga)30 and Tb10Pr40(Cu,Al,Ga)50. However, the coercivity optimization effect deteriorated drastically when the total amounts of metallic elements (Cu, Al and Ga) in diffusion resources reached 70 at%. Microstructure analyses demonstrated that the remarkable coercivity enhancements achieved by the relatively low metallic content sources were mainly attributed to the excellent diffusion effects, in which the Tb diffusion depths were rather deeper and the core-shell structures were easily distinguishable. Meanwhile, due to certain differences in thermodynamic characteristics and diffusion behaviors for these serial of diffusion sources, the effective introductions of Tb and Pr from the original coated sources to the inner of the magnets were respectively different. Especially, the utilization rate of Tb obtained an optimum value of 94.74% using Tb10Pr60(Cu,Al,Ga)30 alloy and the utilization rate of Pr reached the peak value of 81.76% in the use of Tb10Pr40(Cu,Al,Ga)50 alloy, providing experiment support for the further design of alloy diffusion sources with low Tb content. In addition, in-situ magnetic domain observation for the typical diffused magnets in this work was carried out to study the demagnetization behavior and coercivity mechanism of the magnet.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
keyun发布了新的文献求助10
1秒前
1秒前
jason0023完成签到,获得积分10
1秒前
失眠的狗发布了新的文献求助10
1秒前
孝铮完成签到 ,获得积分10
2秒前
执着的松鼠完成签到,获得积分20
2秒前
nicole关注了科研通微信公众号
2秒前
2秒前
3秒前
山楂完成签到,获得积分10
3秒前
4秒前
希望天下0贩的0应助王某采纳,获得10
4秒前
NPC-CBI完成签到,获得积分10
5秒前
wonder123发布了新的文献求助30
6秒前
vv完成签到,获得积分10
6秒前
6秒前
6秒前
畅快芾完成签到,获得积分10
6秒前
7秒前
Mo发布了新的文献求助50
8秒前
phoenix完成签到,获得积分10
8秒前
ding应助干净又晴采纳,获得10
9秒前
虚拟的怀绿完成签到,获得积分10
9秒前
krisliu完成签到,获得积分10
9秒前
舍予有服发布了新的文献求助10
11秒前
酷波er应助老迟到的梦旋采纳,获得10
11秒前
11秒前
畅快芾发布了新的文献求助10
12秒前
小周完成签到,获得积分10
14秒前
田様应助jiajia采纳,获得10
15秒前
Hello应助zjs采纳,获得10
16秒前
ttong发布了新的文献求助10
16秒前
16秒前
ablesic.rong完成签到,获得积分10
17秒前
sml发布了新的文献求助10
17秒前
cutey小鲸鱼完成签到,获得积分20
18秒前
you完成签到,获得积分10
19秒前
krisliu发布了新的文献求助10
20秒前
YJ888发布了新的文献求助10
21秒前
干净又晴发布了新的文献求助10
22秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989550
求助须知:如何正确求助?哪些是违规求助? 3531774
关于积分的说明 11254747
捐赠科研通 3270278
什么是DOI,文献DOI怎么找? 1804966
邀请新用户注册赠送积分活动 882125
科研通“疑难数据库(出版商)”最低求助积分说明 809176