Investigation of chemical composition and crystal structure in sintered Ce15Nd15FebalB1 magnet
Creators
- 1. Beijing Engineering Laboratory of Advanced Metallic Magnetic Materials and Preparation Techniques, Beijing 100081 (China)
- 2. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China)
- 3. Functional Materials Research Institute, Central Iron and Steel Research Institute, Beijing 100081 (China)
Description
The substitution of cerium, a more abundant rare-earth element, for sintered Nd-Fe-B magnets has drawn intense interest. In the present work, nominal composition of Ce15Nd15FebalB1 (wt. %), with cerium constitutes increased to 50% of the total rare-earth content, was used. And Ce-free Nd30FebalB1 (wt. %) was prepared by the same preparation process as comparison. The microstructure of the sintered magnets has been investigated by means of X-ray diffraction and transmission electron microscope. The results show that there are three kinds of RE-rich phases in the same magnet, i.e., fcc-(Ce,Nd)Ox (a=0.547nm), hcp-(Ce,Nd)2O3 (a=0.386nm, c=0.604nm) and bcc-(Ce,Nd)2O3 (a=1.113nm). Ors of (140)(Ce,Nd)2Fe14B// (1-21)bcc-(Ce,Nd)2O3(∼3°), [001](Ce,Nd)2Fe14B// [-214]bcc-(Ce,Nd)2O3; (01-1)(Ce,Nd)2Fe14B// (101)fcc- (Ce,Nd)Ox(∼2°), [101](Ce,Nd)2Fe14B// [12-1]fcc-(Ce,Nd)Ox were found through selected area electron diffraction (SAED) analysis. According to the analysis, it can be concluded that cerium has partly substituted for neodymium by occupying the corresponding atom sites in the Ce15Nd15FebalB1 magnet, without changing the crystal configuration
Additional details
Identifiers
- DOI
- 10.1063/1.4898646;
Publishing Information
- Journal Title
- AIP Advances
- Journal Volume
- 4
- Journal Issue
- 10
- Journal Page Range
- p. 107127-107127.7
- ISSN
- 2158-3226
- CODEN
- AAIDBI
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 46005797
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BCC LATTICES; CERIUM; CHEMICAL COMPOSITION; CRYSTALS; DEUTERIDES; ELECTRON DIFFRACTION; FCC LATTICES; HCP LATTICES; MAGNETS; MICROSTRUCTURE; NEODYMIUM; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION
- Descriptors DEC
- COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CUBIC LATTICES; DEUTERIUM COMPOUNDS; DIFFRACTION; ELECTRON MICROSCOPY; ELEMENTS; EQUIPMENT; HEXAGONAL LATTICES; HYDROGEN COMPOUNDS; METALS; MICROSCOPY; RARE EARTHS; SCATTERING
Optional Information
- Notes
- (c) 2014 Author(s)