Effect of Nb on Magnetic Properties, Microstructures, and Site Preference in Nd-Fe-B Nanograin Single-Phase Alloy

被引：4

作者：

Yang, Fang ^{[1
]}

Guo, Lei-chen ^{[2
]}

Dong, Guang-le ^{[3
]}

Sui, Yan-li ^{[3
]}

Qian, Ping ^{[4
]}

Guo, Zhi-meng ^{[1
]}

Li, Ping ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China

[2] Purdue Univ, Sch Engn Technol, W Lafayette, IN 47907 USA

[3] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[4] Univ Sci & Technol, Inst Appl Phys, Beijing 100083, Peoples R China

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2016年 / 29卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Magnetic properties; Microstructure; Site preference; 3DAP; BULK MAGNETS; CR; TI; ZR; STABILITY; ND2FE14B; BEHAVIOR; RIBBONS; MO; CU;

D O I：

10.1007/s10948-016-3528-9

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effect of Nb addition on the magnetic properties, microstructure, and site preference has been investigated in single-phase Nd12.3Fe81.7-xNbxB6.0 (x = 0-3.0) alloy ribbons. Those ribbons were treated by subsequent annealing. The optimum magnetic properties with J(r) = 0.94 T, H-ci = 919.0 kA/m, and (BH)(max) = 143.1 kJ/m(3) were achieved by annealing the melt-spun ribbons with x = 1.5 at 650 degrees C for 10 min. Additions of Nb were effective in refining the grain size and improving the magnetic properties. Transmission electron microscopy (TEM) showed that there was no second phase or precipitate found in grain boundaries. The results of three-dimensional atom probe (3DAP) indicated that Nb may enter into the amorphous structure and Nd2Fe14B. The content of Nb in Nd2Fe14B was very small. Theoretical calculation showed that Nb preferentially substituted Fe atoms at the 8j(2) sites and the volume of a cell would slightly enlarge.

引用

页码：2591 / 2597

页数：7

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