Microstructure of rapidly quenched Nd-Fe-Zr-B magnets

Journal Article · Tue Nov 15 04:00:00 EST 1988 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.342325· OSTI ID:6726583

Yajima, K; Nakamura, H; Kohmoto, O; Yoneyama, T

An analytical microscopy characterization was carried out on rapidly quenched Nd-Fe-Zr-B magnets with 9--10 at. % Nd contents. These magnets had a high-energy product (15--17 MGOe). The microstructure of these alloys consisted of two phases where 20--40 nm size Nd/sub 2/Fe/sub 14/B grains were surrounded by a 2--20-nm-thick Nd-poor and Fe-rich grain-boundary phase. It is proposed that the Fe-rich boundary phase leads to higher remanence and higher energy products than those found in Nd-Fe-B ternary alloys.

• Research Organization: Research and Development Center, TDK Corporation, 2-15-7 Higashi-ohwada, Ichikawa-shi, Chiba-ken 272, Japan
• OSTI ID: 6726583
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 64:10; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
BORIDES
BORON COMPOUNDS
COHERENT SCATTERING
CRYSTAL STRUCTURE
DEMAGNETIZATION
DIFFRACTION
FAILURES
FRACTURES
GRAIN BOUNDARIES
IRON BORIDES
IRON COMPOUNDS
MAGNETIC PROPERTIES
MAGNETS
MICROSTRUCTURE
NEODYMIUM BORIDES
NEODYMIUM COMPOUNDS
PHYSICAL PROPERTIES
QUENCHING
RARE EARTH COMPOUNDS
SCATTERING
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
ZIRCONIUM BORIDES
ZIRCONIUM COMPOUNDS