Design and large magnetostriction of Tb0.34Dy0.56Pr0.1Fe1.9/epoxy composite containing near-spherical single-crystal particles

被引：8
作者：
Dong, Dashun [1 ]
Qian, Jin [1 ]
Wei, Geng [1 ]
Huang, Ye [1 ]
Zhang, Li [1 ]
Ding, Hehe [2 ]
Shi, Yangguang [2 ]
Tang, Shaolong [1 ]
机构：
[1] Nanjing Univ, Dept Phys, Natl Lab Solid State Microstruct, Collaborat Innovat Ctr Adv Microstruct,Jiangsu Ke, Nanjing 210093, Peoples R China
[2] Nanjing Univ Aeronaut & Astronaut, Key Lab Aerosp Informat Mat & Phys MIIT, Dept Appl Phys, Nanjing 210016, Peoples R China
来源：
SCRIPTA MATERIALIA | 2022年 / 219卷
基金：
中国国家自然科学基金;
关键词：
RFe2 magnetostrictive alloys; Spherical single-crystal powder; Tb-Dy-Pr-Fe/epoxy composite; MAGNETIC-PROPERTIES; MICROSTRUCTURE; GROWTH;
D O I：
10.1016/j.scriptamat.2022.114845
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this study, near-spherical Tb0.34Dy0.56Pr0.1Fe1.9 particles, with diameters in the range 50-200 mu m, were prepared via the low wettability effect. These particles are single crystals or near single crystals, which could be resulted from the abnormal grain growth. These particles were used to prepare giant magnetostrictive composites. Compared with irregularly shaped particles, sphere-shaped crystals can effectively improve the particle-to-epoxy ratio as well as the < 111 > orientation of particles in the composite. Herein, well -< 111 >-oriented composites with 55 vol.% Tb0.34Dy0.56Pr0.1Fe1.9 were designed. The obtained composite exhibited a large saturation magnetostriction at an axial pressure of 10 MPa, lambda(parallel to) = similar to 2048 ppm, which is higher than that of the commercial Terfenol-D (1400-1800 ppm). The findings of our study provide novel insights for developing high-performance magnetostrictive composites containing light rare-earth Pr.
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页数：5
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