Current progress and future challenges in rare-earth-free permanent magnets

J Cui, M Kramer, L Zhou, F Liu, A Gabay… - Acta Materialia, 2018 - Elsevier
Permanent magnets (PM) are critical components for electric motors and power generators.
Key properties of permanent magnets, especially coercivity and remanent magnetization …

Manufacturing processes for permanent magnets: Part I—sintering and casting

J Cui, J Ormerod, D Parker, R Ott, A Palasyuk, S Mccall… - Jom, 2022 - Springer
Permanent magnets (PMs) produce magnetic fields and maintain the field even in the
presence of an opposing magnetic field. Electrical machines using permanent magnets are …

Reducing hot tearing by grain boundary segregation engineering in additive manufacturing: example of an AlxCoCrFeNi high-entropy alloy

Z Sun, X Tan, C Wang, M Descoins, D Mangelinck… - Acta Materialia, 2021 - Elsevier
One major hindrance that alloy design for additive manufacturing (AM) faces nowadays is
hot tearing. Contrary to the previous works which either try to reduce solidification range or …

Strength, plasticity and coercivity tradeoff in soft magnetic high-entropy alloys by multiple coherent interfaces

Z Li, Z Zhang, X Liu, H Li, E Zhang, G Bai, H Xu, X Liu… - Acta Materialia, 2023 - Elsevier
Traditional strengthening of alloys involves dislocation, second phase and grain boundary,
which could deteriorate plasticity and coercivity (H c). In this work, multiple coherent …

[HTML][HTML] Electric vehicle traction motors without rare earth magnets

JD Widmer, R Martin, M Kimiabeigi - Sustainable Materials and …, 2015 - Elsevier
Abstract Since the Hybrid Electric Vehicle (HEV) became main-stream with the launch of the
Toyota Prius in 1997, the use of rare earth magnets in vehicle traction motors has become …

Magnetic anisotropy—How much is enough for a permanent magnet?

R Skomski, JMD Coey - Scripta Materialia, 2016 - Elsevier
Material choices for permanent magnets are analyzed in terms of energy product, anisotropy
and hardness parameter. Energy product is the main consideration for permanent magnets …

Review on soft magnetic metal and inorganic oxide nanocomposites for power applications

A Talaat, MV Suraj, K Byerly, A Wang, Y Wang… - Journal of alloys and …, 2021 - Elsevier
Oxide-based nanocomposites have potential to offer much higher switching frequencies
compared with state-of-the-art soft magnetic materials for applications in power electronics …

[HTML][HTML] Microstructure and tensile property of a precipitation strengthened high entropy alloy processed by selective laser melting and post heat treatment

WC Lin, YJ Chang, TH Hsu, S Gorsse, F Sun… - Additive …, 2020 - Elsevier
The microstructure and tensile property of Al 0.2 Co 1.5 CrFeNi 1.5 Ti 0.3 high entropy alloy
(HEA) processed by selective laser melting (SLM) have been studied in comparisons to that …

Ultrahigh hardness and biocompatibility of high-entropy alloy TiAlFeCoNi processed by high-pressure torsion

P Edalati, R Floriano, Y Tang, A Mohammadi… - Materials Science and …, 2020 - Elsevier
Despite significant studies on mechanical properties of high-entropy alloys (HEAs), there
have been limited attempts to examine the biocompatibility of these alloys. In this study, a …

Hard and semi-hard magnetic materials based on cobalt and cobalt alloys

J Mohapatra, M **ng, J Elkins, JP Liu - Journal of Alloys and Compounds, 2020 - Elsevier
Cobalt (Co) is one of the most important 3d transition metal elements used in the
development of magnetic materials, especially in hard magnetic materials, from the early Co …