TY - JOUR
T1 - High performance X-band electromagnetic wave absorption of SiBCN metamaterials fabricated by direct pyrolysis
AU - Wang, Li
AU - Wang, Ning
AU - Yan, Longxuan
AU - Ma, Yao
AU - Zhang, Zhaofa
AU - Shi, Sen
AU - Niu, Lanjie
AU - Li, Xiangyang
AU - Lu, Bingheng
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/8
Y1 - 2023/8
N2 - Electromagnetic wave (EMW)-absorbing ceramic metamaterials without doping absorbers were prepared by direct pyrolysis of polymer-derived SiBCN ceramics (PDC-SiBCN). The pyrolytic behavior of the ceramics, the effect of the pyrolysis temperature on the mechanical strength, and the EMW absorption properties of the metamaterials are discussed in detail. The mechanism of the enhanced EMW absorption by the metamaterials was further analyzed. The results indicated that PDC-SiBCN demonstrated the optimum impedance matching and absorption performance at a pyrolysis temperature of 1500 °C. The metamaterial can effectively absorb the full X-band when its thickness is in the range of 4.3–5.7 mm. When the thickness was adjusted to 4.7 mm, the minimum reflection coefficient (RC) reached − 26.6 dB. In addition, the flexural strength of the metamaterial was 31.2 MPa, and the compressive strength was 96.9 MPa, which is 60 times higher than that of the solid structure. This study provides a feasible guide for the simple fabrication of lightweight, high-strength, and high-performance EMW-absorbing materials.
AB - Electromagnetic wave (EMW)-absorbing ceramic metamaterials without doping absorbers were prepared by direct pyrolysis of polymer-derived SiBCN ceramics (PDC-SiBCN). The pyrolytic behavior of the ceramics, the effect of the pyrolysis temperature on the mechanical strength, and the EMW absorption properties of the metamaterials are discussed in detail. The mechanism of the enhanced EMW absorption by the metamaterials was further analyzed. The results indicated that PDC-SiBCN demonstrated the optimum impedance matching and absorption performance at a pyrolysis temperature of 1500 °C. The metamaterial can effectively absorb the full X-band when its thickness is in the range of 4.3–5.7 mm. When the thickness was adjusted to 4.7 mm, the minimum reflection coefficient (RC) reached − 26.6 dB. In addition, the flexural strength of the metamaterial was 31.2 MPa, and the compressive strength was 96.9 MPa, which is 60 times higher than that of the solid structure. This study provides a feasible guide for the simple fabrication of lightweight, high-strength, and high-performance EMW-absorbing materials.
KW - Polymer-derived SiBCN ceramics，Electromagnetic wave absorption，Metamaterials，3D printing
UR - https://www.scopus.com/pages/publications/85150059681
U2 - 10.1016/j.jeurceramsoc.2023.02.065
DO - 10.1016/j.jeurceramsoc.2023.02.065
M3 - 文章
AN - SCOPUS:85150059681
SN - 0955-2219
VL - 43
SP - 4073
EP - 4081
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 9
ER -