مرکز منطقه ای اطلاع رساني علوم و فناوري - Magnetic properties of high coercivity melt-spun Pr-Fe-Co-Ti-B-Si system ribbons and their bonded magnets

DocumentCode :

3529227

Title :

Magnetic properties of high coercivity melt-spun Pr-Fe-Co-Ti-B-Si system ribbons and their bonded magnets

Author :

Yamamoto, Hiroshi ; Monma, Kyuki

Author_Institution :

Meiji Univ., Kawasaki, Japan

fYear :

2005

fDate :

4-8 April 2005

Firstpage :

327

Lastpage :

328

Abstract :

In this work, the effect of composition, substrate surface velocity and annealing condition in Pr_xFe_98-x-y-zCo_yTi_1.5B_zSi_0.5 (x = 10.0-13.0, y = 8.0-12.0, z = 7.0-14.0) are investigated. The melt-spun ribbons are prepared by single roller liquid rapid quenching method. These ribbons are annealed between 550 and 625°C. The compression molding isotropic bonded magnets are made by using melt-spun Pr-Fe-Co-Ti-B-Si powder. X-ray diffraction is used to examine crystal structure and transmission electron microscopy is utilized to determine the microstructure of the ribbons. Curie temperature and crystallization temperature of the ribbons are also measured. Results show that high-quality magnetic properties are obtained in Pr₁₁Fe_68.5Co₈Ti_1.5B_10.5Si_0.5 melt-spun ribbons with high coercivity. In Pr₁₃Fe₆₃Co₈Ti_1.5B₁₄Si_0.5 ribbons, the grain size is found to be 70-84 nm.

Keywords :

Curie temperature; X-ray diffraction; annealing; boron alloys; cobalt alloys; coercive force; compression moulding; crystal structure; crystallisation; grain size; iron alloys; melt spinning; permanent magnets; powders; praseodymium alloys; rapid solidification; silicon alloys; titanium alloys; transmission electron microscopy; 550 to 625 degC; 70 to 84 nm; Curie temperature; Pr_xFe_98-x-y-zCo_yTi_1.5B_zSi_0.5; annealing; composition; compression molding isotropic bonded magnets; crystal structure; crystallization temperature; grain size; high coercivity; melt-spun ribbons; microstructure; single roller liquid rapid quenching method; substrate surface velocity; transmission electron microscopy; Annealing; Bonding; Coercive force; Compression molding; Crystallization; Iron; Magnetic properties; Magnets; Powders; Temperature;

fLanguage :

English

Publisher :

ieee

Conference_Titel :

Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International

Print_ISBN :

0-7803-9009-1

Type :

conf

DOI :

10.1109/INTMAG.2005.1463592

Filename :

1463592

Link To Document :

https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=3529227