Effect of Fe on hydrogenation and dehydrogenation of Sm(CobalFexCu0.053Zr0.02)7.84(x=0.2,0.3,0.4,0.5) alloys

Author

Li, M. ; Liu, Z. ; Lei, L. ; Xue, Z. ; He, S. ; Chen, R. ; Lee, D. ; Liu, X. ; Yan, A.

Author_Institution

Key Lab. of Magn. Mater. & Devices, Ningbo Inst. of Mater. Technol. & Eng., Ningbo, China

fYear

2015

fDate

11-15 May 2015

Firstpage

1

Lastpage

1

Abstract

Hydrogen decrepitation as a highly efficient and excellent crushing method is widely used in the preparation of NdFeB magnets. However, this method still exist many difficulties in the industrial preparation for 2:17 type SmCo alloys owing to high hydrogen pressure. Our previous work has reported 2:17 type SmCo alloys occur HD at room temperature and hydrogen pressure of 0.3 MPa and has shown that Fe atom improved hydrogenation decrepitation ability of alloys by improving hydrogen-absorbing ability of 1:7 phase. But the mechanism that Fe improve hydrogen-absorbing ability of the 1:7 phase still need further study. In addition, subsequent degassing behaviour of alloys have been studied by using DSC.

Keywords

cobalt alloys; copper alloys; deaeration; differential scanning calorimetry; high-pressure effects; hydrogenation; iron alloys; samarium alloys; zirconium alloys; DSC; Fe effect; NdFeB magnet preparation; Sm(CoFe_xCu_0.053Zr_0.02)_7.84; SmCo alloys; alloy hydrogenation decrepitation ability; crushing method; degassing behaviour; dehydrogenation; hydrogen pressure; hydrogen-absorbing ability; temperature 293 K to 298 K; Atomic measurements; High definition video; Hydrogen; Iron; Lattices; X-ray scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference (INTERMAG), 2015 IEEE

Conference_Location

Beijing

Print_ISBN

978-1-4799-7321-7

Type

conf

DOI

10.1109/INTMAG.2015.7157027

Filename

7157027