Fe-Nd-B permanent magnet prepared by hot extrusion of rapidly solidified melt-spun filaments

Journal Article · Fri Apr 15 00:00:00 EDT 1988 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.340730· OSTI ID:5328758

Yang, C J; Ray, R

A high-performance Fe-Nd-B permanent magnet containing a fine dispersion of hafnium diboride (HfB/sub 2/) was produced by melt spinning and hot extrusion. The melt-spun filaments of Fe-Nd-B base alloys were hot extruded at 1000 /sup 0/C into 100% dense bar-shaped magnets with an energy product of 16 MGOe. Magnetic properties of the hot extruded bars were anisotropic with highest-energy product values achieved along the directions perpendicular to the extrusion axis. Improved properties were achieved in magnets containing ultrafine Fe-Nd-B grains stabilized by HfB/sub 2/ dispersions. A symptom of crystallographic texture was observed in the extruded magnets.

• Research Organization: Marko Materials, Inc., 144 Rangeway Road, North Billerica, Massachusetts 01862
• OSTI ID: 5328758
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 63:8; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
BORIDES
BORON ALLOYS
BORON COMPOUNDS
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
DISPERSIONS
EXTRUSION
FABRICATION
FILAMENTS
HAFNIUM BORIDES
HAFNIUM COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
MAGNETIC PROPERTIES
MAGNETS
MATERIALS WORKING
METALLURGICAL EFFECTS
MICROSTRUCTURE
NEODYMIUM ALLOYS
PERFORMANCE
PERMANENT MAGNETS
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
REFRACTORY METAL COMPOUNDS
SCATTERING
TEXTURE
TITANIUM BORIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION