Flexible ceramic electromagnetic (EM) absorbers with high thermal stability and broadband EM absorption are in high demand for applications under harsh conditions and EM absorption fields. In this study, we prepared flexible nanofiber mats containing ZrO, ZrC, and ZrB phases as EM absorbers by one-step electrospinning and high-temperature pyrolysis. The ceramic nanofiber mats, pyrolyzed at 1300 ℃ and mixed with paraffin, exhibit a broadband effective absorption bandwidth (EAB) of 8.64 GHz at a thickness of 2.4 mm. Additionally, the mats demonstrate exceptional oxidation resistance up to 1400 ℃. Nanoscale conductive networks with multiple ceramic absorbers are promising candidates for EM absorption applications in high-temperature EM stealth of complex structural components and high-temperature oxidation protection.

中文翻译：

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静电纺丝柔性ZrO2/ZrC/ZrB2陶瓷纳米纤维毡具有宽带电磁吸收和高温抗氧化性能

具有高热稳定性和宽带电磁吸收的柔性陶瓷电磁（EM）吸收体在恶劣条件和电磁吸收领域的应用中需求量很大。在这项研究中，我们通过一步静电纺丝和高温热解制备了含有 ZrO、ZrC 和 ZrB 相的柔性纳米纤维垫作为电磁吸收剂。陶瓷纳米纤维垫在 1300 ℃ 下热解并与石蜡混合，在 2.4 mm 的厚度下表现出 8.64 GHz 的宽带有效吸收带宽 (EAB)。此外，该垫在高达 1400 ℃ 的高温下仍具有出色的抗氧化性。具有多个陶瓷吸收器的纳米级导电网络是复杂结构部件高温电磁隐形和高温氧化防护中电磁吸收应用的有前途的候选者。