Beneficial effect of Co substitution on the structure and magnetic properties of mechanically alloyed (Pr,Tb)-Fe-(C,B) magnets
Creators
- 1. Shenyang National Laboratory for Materials Science, Institute of Metal Research and International Centre for Material Physics, Chinese Academy of Sciences, Shenyang 110016 (China)
Description
The effect of Co substitution on the structure and magnetic properties of mechanically alloyed Pr14Tb2Fe76-xCoxC6B2 and Pr16Fe76-xCoxC6B2 (x=0-20) alloys has been studied systematically. The main phase in the alloys is Pr2Fe14C-type carbide, coexisting with a small amount of α-Fe and rare-earth-rich phases. In addition to the increasing of the Curie temperature of the Pr2Fe14C-type phase, Co substitution can affect the magnetic properties by adjusting the α-Fe fraction of the alloys. The increase of both coercivity and remanence has been realized in a certain composition range. This increase may be attributed mainly to the enhancement of the effective anisotropy constant Keff of the magnets due to the reduced α-Fe fraction with a small Co addition. The highest coercivity iHc of 20.3kOe and the optimum energy product (BH)max of 10.3MGOe have been obtained for the Pr14Tb2Fe69.5Co6.5C6B2 alloy
Additional details
Identifiers
- DOI
- 10.1016/j.jmmm.2005.09.025;
- PII
- S0304-8853(05)00761-4;
Publishing Information
- Journal Title
- Journal of Magnetism and Magnetic Materials
- Journal Volume
- 302
- Journal Issue
- 2
- Journal Page Range
- p. 310-314
- ISSN
- 0304-8853
- CODEN
- JMMMDC
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37109575
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANISOTROPY; BORON ALLOYS; CARBON ADDITIONS; COERCIVE FORCE; CURIE POINT; IRON ALLOYS; IRON-ALPHA; MAGNETIC PROPERTIES; PERMANENT MAGNETS; PRASEODYMIUM ALLOYS; TERBIUM ALLOYS
- Descriptors DEC
- ALLOYS; ELEMENTS; EQUIPMENT; IRON; MAGNETS; METALS; PHYSICAL PROPERTIES; RARE EARTH ALLOYS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS; TRANSITION TEMPERATURE
Optional Information
- Copyright
- Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.