Laser powder bed fusion of the Ni-Mn-Sn Heusler alloy for magnetic refrigeration applications

Sun, Kun; Mohamed, Abd El-Moez A.; Li, Sheng; Jeong, Minki; Head, Jake; Attallah, Moataz

doi:10.1016/j.addma.2023.103536

Cited by 3 publications

(3 citation statements)

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“…Heusler alloys, magnetic alloys with a growing range of applications and uses, have been 3D printed by using ink casting and laser bed sintering additive manufacturing methods. There are benefits to using these techniques, but they require more material during the manufacturing process than is included in the final device. , Magnetic materials may include rare metals, for example, neodymium and cobalt, which are expensive and difficult to supply . Mining even abundant minerals used in magnets such as iron, manganese, and zinc have severe environmental and social implications, including biodiversity loss and water contamination .…”

Section: Introductionmentioning

confidence: 99%

Magnetic Ferrite Nanoparticle Inks for Syringe Printable Inductors

Fedderwitz,

Hammell,

Lujan

et al. 2024

ACS Appl. Electron. Mater.

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Additive manufacturing has the potential to simplify fabrication processes by using a single apparatus that exchanges printable material at the print head to create complex shapes. Circuit components can be made of various materials such as magnetic materials, which are specifically used for many applications, including inductors. Few syringe printable magnetic inks have been explored, and even fewer to create a final product with high magnetic content compared to polymer content (>90 vol %). In this study, syringe printable, colloidal magnetic inks are made using both iron oxide and MnZn doped ferrite nanoparticles by stabilizing them with poly(acrylic acid) (PAA) and adding a free polymer poly(ethylene oxide) (PEO) of various molecular weights and glycerol to control ink viscosity and evaporation rates. Printability is further explained using complex rheology. MnZn doped ferrite inks are printed into toroids and sintered at 1400 °C to increase magnetic permeability. A sintered toroid is constructed into an inductor device and characterized using a Vector Network Analyzer (VNA), which exhibits an inductance of 4.26 μH at 8.5 MHz. This study lays out a template for ferrite inks with the potential to be fabricated into useful passive electronic devices.

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Section: Introductionmentioning

confidence: 99%

Magnetic Ferrite Nanoparticle Inks for Syringe Printable Inductors

Fedderwitz,

Hammell,

Lujan

et al. 2024

ACS Appl. Electron. Mater.

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“…Several magnetocaloric materials, including La-Fe-Si, Mn-Fe-P-Si, La-Ca-Mn-O, Al-Fe-B, and Ni-Mnbased alloys, have been successfully prepared by laser powder bed fusion, 3D ink-printing, binder jetting or directed energy deposition. 4,5 The attention has been paid to the channel design, process parameters, microstructural development, defects, and magnetocaloric effects in AM. By optimizing process parameters, the values of the magnetocaloric effects have been close to those of alloys prepared by conventional manufacturing.…”

mentioning

confidence: 99%

“…Notably, the AM La(Fe, Co, Si) 13 geometries have exhibited remarkable durability, surviving more than 10 6 cycles in the presence of a magnetic field without heat transfer fluid. 4 Although AM technologies can bring many advantages for channel design and manufacture, certain challenges (e.g., powders, AM process, properties of AM parts, shape design, heat transfer optimization) persist. The spherical powders are usually preferred for their better flowability, layer spreading, and powder packing.…”

mentioning

confidence: 99%