Structure and electromagnetic properties of FeSiAl particles coated by MgO

In situ generated gas bubble-directed self-assembly of multifunctional MgO-based hybrid foams for highly efficient thermal conduction, microwave absorption, and self-cleaning

“…7 Frequency characteristics: (a1)-(f1) 3D RL plots, (a2)-(f2) effective absorption bandwidth (EABW, RL rÀ10 dB) and optimal ratio of bandwidth to thickness (EABW/d) of MgO/Co/C foams formed under various Co 2+ content (j, mol%). The comprehensive EMWAP comparison of MgO/Co/C foams with previously reported absorbers: 10,14,15,18,21,30,31,[49][50][51][52][53][54][55][56][57][58][59][60][61][62][63] (g1) EABW/d and (g2) RL min .…”

“…Also, the value is 1.05-10.88 times greater than those of other absorbers (0.5-5.18 GHz mm À1 ). 10,15,18,21,30,31,[49][50][51][52][53][54][56][57][58][59][60][61][62][63] Overall, MgO/Co/C foams have bright application prospects as a highperformance EMW absorber in the electronics industry due to their strong absorption, wide EABWs, and thin thickness.…”

Fabrication and Microwave Absorption Properties of FeSiAl@PANI Composites

“…8,9 However, the drawbacks of narrow absorption bandwidth, high conductivity, and insufficient interfacial polarization limit their practical application in many fields. 10,11 Previous studies have shown that the dielectric constant of FeSiAl can be reduced, and good impedance matching can be obtained by surface oxidization and cladding insulating layers such as SiO 2 and Al 2 O 3.…”

“…Ferrite absorber has low permeability and dielectric constant in L and S frequency bands, which requires a large filling ratio and thickness to realize the effect of wave absorption . While FeSiAl alloys have high starting permeability and saturation magnetic induction strength, which are favorable for obtaining lower thickness and higher reflection loss, and thus have gained widespread attention. , However, the drawbacks of narrow absorption bandwidth, high conductivity, and insufficient interfacial polarization limit their practical application in many fields. , Previous studies have shown that the dielectric constant of FeSiAl can be reduced, and good impedance matching can be obtained by surface oxidization and cladding insulating layers such as SiO 2 and Al 2 O 3. − Meanwhile, compounding with carbon-based materials can introduce dielectric losses and enhance the electromagnetic loss capability of the materials. , Therefore, excellent FeSiAl-based wave-absorbing materials are usually obtained by adjusting the particle size, surface morphology, chemical composition, and compounding with other materials. − …”

Enhanced Magnetic Properties of FeSiAl Soft Magnetic Composites Prepared by Utilizing PSA as Resin Insulating Layer

“…Thus, existing polymers require further research and development. Inorganic coating materials include phosphate, oxides, sodium silicate, and ferrite [ 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ].…”