Enhancing electromagnetic wave absorption performance through construction of three-dimensional multilayered SiC w /Y 3 Si 2 C 2 / Ni 0.5 Zn 0.5 Fe 2 O 4 composites

In this study, three-dimensional (3D) multilayer electromagnetic wave absorbing (EMWA) materials SiC w / Y 3 Si 2 C 2 /Ni 0.5 Zn 0.5 Fe 2 O 4 were fabricated for the first time. A two-dimensional (2D) Y 3 Si 2 C 2 coating was synthesized onto the one-dimensional (1D) SiC w surface by the molten salt method. Subsequently, one layer of zerodimensional (0D) Ni 0.5 Zn 0.5 Fe 2 O 4 nanoparticles was deposited onto the Y 3 Si 2 C 2 coating surface via hydrothermal reaction. The microstructure and electromagnetic wave absorption mechanism of SiC w /Y 3 Si 2 C 2 /Ni 0.5 Zn 0.5 Fe 2 O 4 were systematically investigated. The introduction of 2D Y 3 Si 2 C 2 and 0D Ni 0.5 Zn 0.5 Fe 2 O 4 enhanced impedance matching and provided abundant heterogeneous interfaces, thus leading to interface polarization loss. Owing to the promoted impedance matching and superb attenuation capacity, 3D multilayered SiC w /Y 3 Si 2 C 2 /Ni 0.5 Zn 0.5- Fe 2 O 4 composites exhibit superior EMWA performance in comparison with origin SiC w . For the SiC w /Y 3 Si 2 C 2 / Ni 0.5 Zn 0.5 Fe 2 O 4 composites, their minimum reflection loss (RL min ) can be achieved -43.95 dB and the effective absorption bandwidth (EAB) is 4.08 GHz when the thickness is 2.12 mm. This study could pave a reference for the investigation of multi -dimensional hybrid structure EMWA material.