A SiC nanowires/Ba0.75Sr0.25Al2Si2O8 ceramic heterojunction for stable electromagnetic absorption under variable-temperature. (20th October 2022)

• Record Type: Journal Article
• Authors: Li, Xin; Lu, Xiaoke; Li, Minghang; Xue, Jimei; Ye, Fang; Fan, Xiaomeng; Liu, Yongsheng; Cheng, Laifei; Zhang, Litong
• Is Part Of: Journal of materials science & technology. Volume 125(2022)
• Page Start: 29
• Page End: 37
• Publication Date: 2022-10-20
• Subjects: Ceramic heterojunction -- Energy gap regulation -- Polarization effect -- Stable electromagnetic absorption -- Variable-temperature -- Environment adaptability; Metals -- Periodicals; Materials science -- Periodicals; Materials science; Metals; Periodicals; 620.1105
• DOI: 10.1016/j.jmst.2022.02.032
• Languages: English
• ISSNs: 1005-0302

Abstract

Abstract: The application of semiconductor materials was limited as electromagnetic absorption materials, due to the unstable absorption performance caused by the temperature sensitivity. In this work, a structurally controllable ceramic heterojunction was developed by assembling structural units of SiC nanowires (SiCnws) and Ba0.75 Sr0.25 Al2 Si2 O8 (BSAS). Benefiting from the optimization of the energy gap and the construction of heterogeneous interfaces, the ceramic heterojunction can achieve stable electromagnetic absorption from room temperature to 600 °C, the effective absorption bandwidth is almost unchanged. And the minimum reflection loss value reached -63.6 dB at 600 °C. Meanwhile, the SiCnws/BSAS ceramic heterojunction shows stable electromagnetic absorption performance in various simulated outdoor environments, including acid rain, seawater, high temperature and water vapor corrosion. This result provides a fire-new idea to realize the environmental adaptability of electromagnetic absorption materials and largely broadens its application prospect. Graphical abstract: Image, graphical abstract