Abstract Nickel-containing polymer-derived SiCN ceramics (PDC-SiCN (Ni) ceramics) were prepared with different adding amounts of Ni nanopowders by a polymer-derived method. The compositions, microstructure, electromagnetic (EM) properties and microwave absorption properties of the PDC-SiCN (Ni) ceramics in the 2–18 GHz frequency range were investigated. Results showed that the Ni nanoparticles were distributed in the SiCN amorphous matrix. Moreover, the electromagnetic properties could be tuned by varying the Ni adding amounts. The best absorption properties with a maximum reflection loss (R L ) of − 39 dB at 17.2 GHz was obtained in the PDC-SiCN (Ni) ceramics with 10 wt% adding amount and the effective absorption width (R L

中文翻译：

---

含镍聚合物衍生的SiCN陶瓷的电磁波吸收特性

摘要 采用聚合物衍生法制备了不同添加量的Ni纳米粉体的含镍聚合物衍生SiCN陶瓷（PDC-SiCN（Ni）陶瓷）。研究了 PDC-SiCN (Ni) 陶瓷在 2-18 GHz 频率范围内的成分、微观结构、电磁 (EM) 性能和微波吸收性能。结果表明，Ni纳米颗粒分布在SiCN非晶基体中。此外，可以通过改变 Ni 添加量来调整电磁特性。PDC-SiCN (Ni) 陶瓷在 17.2 GHz 的最大反射损耗 (RL ) 为 - 39 dB 时获得了最佳吸收性能，添加量为 10 wt%，有效吸收宽度 (RL