The effects of the α-Fe precipitation on the coercive force of the rapidly quenched Pr-Fe-B-Zr alloys

Author

Jeung, W.Y. ; Kang, I.K. ; Choi, J.O. ; Lee, J.J.

Author_Institution

Div. of Metals, Korea Inst. of Sci. & Technol., Seoul, South Korea

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

1733

Lastpage

1735

Abstract

It has been found that the magnetic properties of the optimally heat-treated overquenched ribbons are inferior to those of the ribbons optimally quenched directly from the molten alloy. An attempt is made to elucidate the difference in coercive force between the two states. X-ray diffraction and thermomagnetic analysis confirm that the α-Fe phase is precipitated during the underquenching and the annealing after overquenching. This indicates that the degradation of coercive force of the annealed overquenched ribbons originates from the α-Fe precipitates. The existence of α-Fe is less detrimental to the coercive force than expected, suggesting that the grain boundary suppresses the propagation of domain walls

Keywords

X-ray diffraction examination of materials; annealing; boron alloys; coercive force; ferromagnetic properties of substances; grain boundaries; iron alloys; magnetic domain walls; praseodymium alloys; precipitation; quenching (thermal); zirconium alloys; α-Fe precipitation; Pr-Fe-B-Zr alloys; X-ray diffraction; annealing; coercive force; domain walls; grain boundary; magnetic properties; molten alloy; optimally heat-treated overquenched ribbons; rapidly quenched; thermomagnetic analysis; underquenching; Amorphous magnetic materials; Amorphous materials; Annealing; Coercive force; Crystallization; Magnetic domain walls; Magnetic properties; Magnetic separation; Temperature; X-ray diffraction;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104508

Filename

104508