Published 1998 | Version v1
Miscellaneous Metadata-only

The microstructure and Nd2(Fe,Co)14B/Nd2(Fe,Co)17 exchange coupling interaction of Nd12.5Fe77Co6B4.5 in HDDR powder form

Creators

  • 1. Beijing Univ. of Science and Technology, BJ (China)

Description

The effects of B content on microstructure and magnetic characterization in HDDR Nd12.5Fe81.5-xCo6Bx (x=2∝8) powder/bonded magnets were investigated. We found that the materials retain approximate coercive value (∝1000 kA/m) as x is in a wide range from 4 at% to 8 at%. The microstructure and phase component of Nd12.5Fe77Co6B4.5 coercive powder was examined using high resolution transmission electron microscopy (HREM) and vibrating sample magnetometer (VSM). It was found that HDDR powder with this composition mainly consists of two magnetic phases (Nd2(Fe,Co)14B and Nd2(Fe,Co)17). HREM analysis showed that Nd2(Fe,Co)17 phase (30∝50 nm) is finely distributed in Nd2(Fe,Co)14B phase. An exchange coupling exists across the interface of Nd2Fe14B and Nd2(Fe,Co)17 phases, which results in the improvement of remanence. (orig.)

Part of:
Rare-earth magnets and their applications. Vol. 1. Proceedings

Additional details

Publishing Information

ISBN
3-88355-264-X
Imprint Title
Rare-earth magnets and their applications. Vol. 1. Proceedings
Imprint Pagination
604 p.
Journal Page Range
p. 599-604

Conference

Title
15. international workshop on rare-earth magnets and their applications (REM-15); 10. international symposium on magnetic anisotropy and coercivity in rare-earth transition metal alloys, and exhibition
Dates
30 Aug - 4 Sep 1998
Place
Dresden (Germany)

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
31018614
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
ADSORPTION; BORON ALLOYS; COBALT ALLOYS; COERCIVE FORCE; DESORPTION; FERROMAGNETIC MATERIALS; HYDROGENATION; IRON ALLOYS; NEODYMIUM ALLOYS; PERMANENT MAGNETS; TRANSMISSION ELECTRON MICROSCOPY
Descriptors DEC
ALLOYS; CHEMICAL REACTIONS; ELECTRON MICROSCOPY; EQUIPMENT; MAGNETIC MATERIALS; MAGNETS; MATERIALS; MICROSCOPY; RARE EARTH ALLOYS; SORPTION; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
9 refs.