Microstructure-magnetic shielding development in additively manufactured Ni-Fe-Mo soft magnet alloy in the as fabricated and post-processed conditions

Electromagnetic shielding properties of LPBF produced Fe2.9wt.%Si alloy

“…On the contrary, along the axial direction, the standard Zn-coated mild steel shield shows comparable but slightly better shielding performances than the heat treated condition only at the bottom and at the half of the shield (first two measurement points). Testing of magnetic shielding performances of functional and practical samples made via LPBF is not very common [43][44][45]. This work demonstrated that LPBF is suitable for the manufacturing of iron silicon steel shields even with elementary geometries, while TLPBF offers a great freedom in the design of functional components.…”

“…Complex maze-like structures such as lattice or honeycomb can be easily realized via LPBF to increase the number of surfaces that contribute to the shielding from electromagnetic waves while simultaneously reducing the weight of these objects, which is extremely desirable in the aerospace field. Some studies focused on the LPBF realization of complex shape shields made of Ni-Fe-Mo alloys [43][44][45][46] and their functional characterization in terms of shielding performance [43,44] have been published so far. However, none of these was realized with electrical steels, which stand out as the most processed soft magnetic alloy in the literature.…”

Frequency Properties of Polymer Bonded Compacts Obtained from Ball Milled Permalloy Powders with Mo and Cu Additions

“…Permalloy properties are also found to depend on the production method. Here several techniques both classical and more modern [ 4 ] can be mentioned: thin films by sputtering [ 5 ], ion beam [ 6 ], laser melting [ 7 , 8 ] solid solution precursors [ 9 ], additive manufacturing [ 10 , 11 ], soft chemistry [ 12 ], spray pyrolysis [ 13 ], and mechanical alloying [ 14 , 15 , 16 , 17 , 18 , 19 ].…”