Improved electromagnetic wave absorbing performance of PDCs-SiCN(Ni) fibers with different nickel content

Enhanced electromagnetic wave absorption properties of SiCN(Ni)/BN ceramics by in situ generated Ni and Ni3Si

“…The reason may be that in the process of high temperature pyrolysis, polysilazane is decomposed and cross-linked, releasing small gas molecules such as CH 4 as carbon source, and in situ forming carbon nanowires under the catalysis of nickel. 26–28 However, with further increased NA content, the nanowires disappeared and formed irregular clusters (Fig. 4(e)).…”

Microstructural evolution and electromagnetic wave absorbing performance of single-source-precursor-synthesized SiCuCN-based ceramic nanocomposites

“…One good method to improve the dielectric properties of the SiCN-based ceramics for EMW absorbing application is to introduce high dielectric loss phases (e.g., the conductive fillers) into the SiCN matrix by mechanical blending or by chemical J u s t A c c e p t e d modification of the preceramic precursors [23][24][25][26]. For instance, Liu and coworkers [27] prepared Nickel-containing polymer-derived SiCN ceramics via physically mixing different amounts of Ni nano-powders with polysilazane.…”

Excellent electromagnetic wave absorption properties of SiCN ceramic aerogels via a controlled hydrosilylation reaction

“…Based on these advantages, they have been widely used in high temperature sensors, ceramic fibers, energy storage materials, and ceramic matrix composites 17–20 . In particular, they possess an outstanding EMA performance 9,21,22 . However, most of the existing reports have focused on the EMA properties of dense PDC bulk materials, and several problems still need to be addressed, such as the high density.…”

“…[17][18][19][20] In particular, they possess an outstanding EMA performance. 9,21,22 However, most of the existing reports have focused on the EMA properties of dense PDC bulk materials, and several problems still need to be addressed, such as the high density.…”