A5101900468- Magnetic Properties of Alloys
- Magnetic Properties and Applications
- Magnetic properties of thin films
- Rare-earth and actinide compounds
- Superconducting Materials and Applications
- Metallurgical and Alloy Processes
- Magnetic and transport properties of perovskites and related materials
- Hydrogen Storage and Materials
- Metallic Glasses and Amorphous Alloys
- Magnetic and Electromagnetic Effects
- Boron and Carbon Nanomaterials Research
- Electromagnetic wave absorption materials
- Magnetic Bearings and Levitation Dynamics
- Microstructure and Mechanical Properties of Steels
- Advanced Antenna and Metasurface Technologies
- Induction Heating and Inverter Technology
- Aluminum Alloys Composites Properties
China Iron and Steel Research Institute Group
2001-2024
Chinese Academy of Sciences
2023-2024
Ningbo Institute of Industrial Technology
2023-2024
University of Science and Technology Beijing
1998-1999
Peking University
1993-1996
In response to the progressively demanding operational conditions imposed on permanent magnet materials, advancement of sintered Nd-Fe-Co-B magnets exhibiting high temperature stability holds great importance. The magnetic properties and have been widely recognized. However, their internal structure is complex has phases that reduce coercivity. There still little research phase composition microstructure. This study involved fabrication powder with Co contents 0.5 wt.% 16 wt.%, which were...
It has been 15 years since China dominated the rare earth permanent magnet market in 2001. The annual output of sintered Nd-Fe-B magnets reached a new record 126,300 tonnages 2015 while 2001 is only 6,500 tonnages. average growth rate from to about 23.5% though 2012 suffers deep drop due well known crisis 2011. Currently, RE production capability seems be over developed compared actual requirements. Needless say oversupply situation implies hard time for manufacturers fierce competition but...
Abstract The high coercivity of Nd–Fe–B magnets can also be obtained in the Ce–Fe–B fabricated via dual-main-phase (DMP) method which abundance Ce was used to substitute Nd(Pr). inhomogeneous distributions matrix grains DMP magnet play a key role enhanced magnetic performance. Compared with single-phase magnet, more grain boundary phases encapsulating 2:14:1 are formed reduce exchange coupling between adjacent grains. switching field distribution and interaction were determined by...
We have succeeded in preparing RFe10.5V1.5 compounds and their corresponding nitrides RFe10.5V1.5Nx, where R=Y, Ce, Nd, Sm, Gd, Td, Dy, Ho, Er. The structural magnetic properties of RFe10.5V1.5Nx been investigated by x-ray diffraction techniques measurements compared with those RFe10.5V1.5, NdFe10.5V1.5Nx is a new potential hard material excellent intrinsic properties.
The structure and magnetic properties of RFe12−xMox series their nitrides with R=Y,Gd,Nd x=0.8,1.0,1.5,2.0,2.5 have been studied by x-ray-diffraction measurements. It is found that the increment Mo content x, lattice parameters increase, whereas saturation magnetization, Curie temperature, anisotropy field decreases in series. Upon nitrogenation parameters, temperature increase. Correspondingly, easy c-axis magnetocrystalline Fe sublattice YFe12−xMoxNy GdFe12−xMoxNy but increases...
Carbon was introduced by arc melting to RTiFe11, where R=Sm, Gd, Th, Dy, Ho, Er, and Y, its effects on the crystallographic magnetic properties of these compounds have been investigated x-ray measurements. The experimental results show that carbon atoms occupy 8i sites in ThMn12 structure. It is found substitution does not an effect Curie temperature, but instead increases both saturation magnetization magnetocrystalline anisotropy. intrinsic SmTiFe11 are improved with addition atoms,...
Single-grain models with different cerium contents or structural parameters have been introduced to investigate the reversal magnetization behaviors in cerium-containing magnets. All micromagnetic simulations are carried out via object oriented framework (OOMMF). As for single (Nd,Ce)2Fe14B type grain, coercivity decreases monotonously increase of content. Four types grain structure compared: type, core ((Nd,Ce)2Fe14B)–shell (Nd2Fe14B) 2 nm thick shell, (Ce2Fe14B)–shell and (Nd2Fe14B)–shell...