Enhanced magnetic properties and bending strength of hot deformed Nd–Fe–B magnets with Cu additions

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 宁波所知识产出

	Enhanced magnetic properties and bending strength of hot deformed Nd–Fe–B magnets with Cu additions
	Yi PP ; Lin M ; Chen RJ ; Lee D ; Yan AR
刊名	Journal of Alloys and Compounds
	2009
期号	in press
关键词	Permanent magnets Rapid solidification Quenching Grain boundaries Mechanical properties Transmission electron microscopy
合作状况	国内
中文摘要	Commercial rapidly-quenched Nd-Fe-B ribbons blended with fine Cu powders (10–30μm) were hot pressed to obtain fully dense magnets and then die upset into highly anisotropic, oriented magnets. The effects of Cu addition on the magnetic properties and bending strength of hot deformed Nd–Fe–B magnets were investigated. It was found that the coercivity (Hcj) and maximum energy product (BH)max as well as the bending strength were enhanced significantly by Cu addition. Detailed microstructural investigations were carried out by transmission electron microscopy/high-resolution transmission electron microscopy (TEM/HRTEM). It shows that there are two types of grain boundaries in Cu-doped magnet, one is parallel and the other is trigonal. However, energy dispersive X-rays (EDX) analyses indicate that the two type intergranular phases are NdCu2. Analyses indicate that the enhanced texture of Cu-doped magnet is due to the lower melting point of the intergranular phase, leading to the enhancement in magnetic properties. Improvement of bending stress in Cu-doped magnet is related to the trigonal grain boundaries and the rheology of the intergranular phase.
收录类别	SCI
语种	英语
公开日期	2010-01-08
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/252]
专题	宁波材料技术与工程研究所_宁波所知识产出
推荐引用方式 GB/T 7714	Yi PP,Lin M,Chen RJ,et al. Enhanced magnetic properties and bending strength of hot deformed Nd–Fe–B magnets with Cu additions[J]. Journal of Alloys and Compounds,2009(in press).
APA	Yi PP,Lin M,Chen RJ,Lee D,&Yan AR.(2009).Enhanced magnetic properties and bending strength of hot deformed Nd–Fe–B magnets with Cu additions.Journal of Alloys and Compounds(in press).
MLA	Yi PP,et al."Enhanced magnetic properties and bending strength of hot deformed Nd–Fe–B magnets with Cu additions".Journal of Alloys and Compounds .in press(2009).