Effect of Dy Addition on the Magnetic and Mechanical Properties of Sintered Nd-Fe-B Magnets Prepared by Double-Alloy Powder Mixed Method

被引：10

作者：

Hu, Z. H. ^{[1
]}

Ma, D. W. ^{[1
]}

Qu, H. J. ^{[2
]}

Zhao, J. Q. ^{[2
]}

Luo, C. ^{[1
]}

Wang, H. J. ^{[3
]}

机构：

[1] Hubei Univ Automot Technol, Coll Mat Sci & Engn, Shiyan 442002, Peoples R China

[2] Dongfeng Commercial Vehicle Co Ltd, Mat & Technol Inst, Shiyan 442021, Peoples R China

[3] Ningbo Jinji Strong Magnet Mat Co Ltd, Ningbo 315041, Zhejiang, Peoples R China

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2015年 / 51卷 / 11期

关键词：

Double-alloy powder mixed method; magnetic properties; mechanical properties; sintered Nd-Fe-B magnets; IMPACT TOUGHNESS;

D O I：

10.1109/TMAG.2015.2443122

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The effect of Dy addition on the magnetic and mechanical properties of sintered Nd-Fe-B magnets prepared by the double-alloy powder mixed method was investigated. The results showed that the intrinsic coercivity of sintered Nd-Fe-B magnets increases gradually, and the squareness factor of sintered Nd-Fe-B magnets declines with increasing Dy content. The Vickers hardness of sintered Nd-Fe-B magnets increases with increasing Dy content, and the maximum fracture toughness of sintered Nd-Fe-B magnets is obtained when the Dy content is 2 wt%. The bending strength of sintered Nd-Fe-B magnets first declines, and then increases with increasing Dy content. The minimum bending strength of sintered Nd-Fe-B magnets is obtained at the Dy content of 2 wt%. The microstructure showed that the distribution of Dy content in main phase was not uniform because of the Dy diffusion of double-alloy mixed powder during the sintering process.

引用

页数：3

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