United States

nd-fe-b

statistical modeling

coercivity

laser powder bed fusion

additivr manufacturing

It is our great pleasure to invite you to attend the 26th International Workshop on Rare Earth and Future Permanent Magnets and Their Applications (REPM2021) which will be held virtually on June 7-10, 2021. Please note, this is an updated schedule due to COVID-19 travel restrictions which forced us to postpone the conference from summer of 2020. The REPM workshop takes place every two years and is the premier conference on permanent magnets covering a wide range of topics including:

* Rare earth magnets
* Rare earth-free magnets
* Raw materials, mining and recycling
* Advanced synthesis, processing and characterization techniques
* Theoretical modeling of coercivity
* Fundamental properties of advanced magnetic materials
* Thin film magnets
* Applications of permanent magnets

***Workshop***
The workshop will be chaired by Professor George C. Hadjipanayis, University of Delaware, Newark, DE and Dr. Jinfang Liu, President & COO of Electron Energy Corporation, Landisville, PA.
The objectives of the workshop are to bring together engineers and scientists who work on permanent magnets and their applications to present their latest results and exchange ideas on a wide range of relevant topics including resources, raw materials, recycling, processing, fundamental and hard magnetic properties and applications of rare earth and future magnets.

To regsiter for this event, please follow the link below.

REPM 2021: The 26th International Workshop on Rare-Earth and Future Permanent Magnets and their Applications

Additive manufacturing of Nd-Fe-B permanent magnets by means of Laser powder bed fusions (LPBF) offers the possibility to overcome geometrical restrictions of the traditional powder metallurgical fabrication route for sintered magnets. LPBF is a layer-by-layer additive manufacturing technique, which utilizes lasers to selectively melt metallic powders, which then fuse during solidification. The final product of this manufacturing technique is a dense metallic part. The unique manufacturing process, which includes local melting of a powder material, rapid cooling, directional heat transfer and several re-heating and re-melting, creates special microstructural features and can improve magnetic properties of the final magnet significantly. For example, the coercivity of a LPBF-processed magnet can be increased by more than 30% - from 700 kA/m to more than 900 kA/m - compared to an Nd-lean powder, which was originally optimized for polymer bonded magnets. However, the right choice of the processing parameters is of critical importance for the successful application of LPBF to permanent magnets. The interaction of the major influencing variables, such as laser powder or scan velocity, is difficult to treat in physically based models. An alternative approach for the creation of a suited process model is a statistically based Design of Experiment, which can be used to find an optimal parameter set in a given experimental space. In our current work we use the DoE approach for the comparison of different LPBF machines and for prediction of optimal magnetic properties within a predefined manufacturing parameter range.

Laser Powder Bed Fusion of Nd-Fe-B Permanent Magnets: Solving the Optimization Problem using Design of Experiments and Statistics

poster

Exchange bias in bulk FeNi-NiO nanocompounds processed by severe plastic deformation

Microstructural engineering through grain boundary modification for improved recycled rare earth permanent magnets

Production of Nd-Fe-B based powders for Laser-Powder-Bed-Fusion - the 3DREMAG Project

High performance Ce-substituted hot-deformed magnets with 20% Nd reduction

An overview on Rare-Earths market and recycling

Structural refinement and magnetic properties of SmCo5-Cu nanocomposites after high pressure torsion

Heat magnetizing method for high-performance neodymium magnets (hot-deformed Nd-Fe-B magnets)

Doping effect of R80Al20 (R= Ce and Dy) alloy powders on the magnetic properties of hot-deformed NdFeB magnet with various reduction ratios

Investigating the magnetic coupling of hard (SrFe12O19) and soft (Co) phases in atomic contact

Formation of Carbide Phases in MnAl-C Magnets

Laser Powder Bed Fusion of Nd-Fe-B Permanent Magnets: Solving the Optimization Problem using Design of Experiments and Statistics

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