Substantial coercivity enhancement in Dy-free Nd-Fe-B sintered magnet by Dy grain boundary diffusion
To date, the highest coercivity reported for Dy-free Nd–Fe–B sintered magnets under the Dy
grain boundary diffusion (GBD) process is∼ 2.4 T. Therefore, exploring various approaches …
grain boundary diffusion (GBD) process is∼ 2.4 T. Therefore, exploring various approaches …
Unveiling the origin of the large coercivity in (Nd, Dy)-Fe-B sintered magnets
X Tang, J Li, H Sepehri-Amin, A Bolyachkin… - NPG Asia …, 2023 - nature.com
Nd-Fe-B-based permanent magnets are widely used for energy conversion applications.
However, their usage at elevated temperatures is difficult due to the relatively low coercivity …
However, their usage at elevated temperatures is difficult due to the relatively low coercivity …
[HTML][HTML] Grain boundary oxide layers in NdFeB-based permanent magnets
A Mazilkin, BB Straumal, SG Protasova, S Gorji… - Materials & Design, 2021 - Elsevier
The microstructure of grain boundaries (GBs) in the commercial NdFeB-based alloy for
permanent magnets has been studied. It is generally accepted that the unique hard …
permanent magnets has been studied. It is generally accepted that the unique hard …
Development of a prototype thermodynamic database for Nd-Fe-B permanent magnets
T Abe, M Morishita, Y Chen… - … and Technology of …, 2021 - Taylor & Francis
ABSTRACT For the Nd-Fe-B permanent magnets, a prototype thermodynamic database of
the 8-element system (Nd, Fe, B, Al, Co, Cu, Dy, Ga) was constructed based on literature …
the 8-element system (Nd, Fe, B, Al, Co, Cu, Dy, Ga) was constructed based on literature …
Effects and regulation mechanisms of post-sinter annealing treatment on magnetic properties and microstructures of Nd-Fe-B sintered magnets with varying boron …
Q Huang, Q Jiang, K Zhong, D Chen, D Xu… - Journal of Materials …, 2024 - Elsevier
Abstract In traditional Nd-Fe-B-based sintered magnets, the composition, role of each
element and microstructures have been extensively investigated globally since they were …
element and microstructures have been extensively investigated globally since they were …
First-principles determination of intergranular atomic arrangements and magnetic properties in rare-earth permanent magnets
Y Gohda - Science and Technology of Advanced Materials, 2021 - Taylor & Francis
Development of high-performance permanent magnets relies on both the main-phase
compound with superior intrinsic magnetic properties and the microstructure effect for the …
compound with superior intrinsic magnetic properties and the microstructure effect for the …
Tailoring phase transformation pathways to enhance magnetic performance in Ga-doped sintered Nd-Fe-B magnets
Abstract The RE 6 Fe 13 Ga phase (RE, Rare Earth) exhibits tremendous promise for
achieving high-performance magnets. However, the challenge of controlling its formation …
achieving high-performance magnets. However, the challenge of controlling its formation …
Relationship between the microstructure, local magnetism and coercivity in Ga-containing Nd-Fe-B sintered magnets
D Billington, H Okazaki, K Toyoki, Y Kotani, Y Takada… - Acta Materialia, 2021 - Elsevier
The crystalline phases that comprise the bulk microstructure of an isotropic Ga-containing
Nd-Fe-B sintered magnet are identified by in situ elevated-temperature x-ray diffraction for …
Nd-Fe-B sintered magnet are identified by in situ elevated-temperature x-ray diffraction for …
On the temperature-dependent coercivities of anisotropic Nd-Fe-B magnet
We have studied the thermal stability of coercivity in anisotropic Nd-Fe-B magnet from 300 K
to 500 K by combining the micromagnetic simulation with the numerical estimation of …
to 500 K by combining the micromagnetic simulation with the numerical estimation of …
Intergranular phase transformation in post-sinter annealed Nd–Dy–Fe–Cu–Ga–B magnet: From Ia3¯-cubic to I4/mcm-tetragonal structure
Abstract High-coercivity Nd–Fe–B permanent magnets crucially depend on the deliberate
modulation of intergranular phases, notably exemplified by the I4/mcm-tetragonal Nd 6 Fe …
modulation of intergranular phases, notably exemplified by the I4/mcm-tetragonal Nd 6 Fe …