前体衍生Mo2C/SiC复合材料具有二维板结构,用于电磁波吸收
Yang Li1, Wen Yang2, Jipeng Zhang2
1School of Materials Science and Engineering, Shandong University of Technology, Zibo 255000, China.
Materials (Basel, Switzerland)
|April 24, 2025
概括
这项研究引入了一种新的碳化/碳化陶,用于微波吸收. 它克服了传统碳化的局限性,通过减少碳含量和通过二维结构增强吸收.
科学领域:
- 材料科学 材料科学 材料科学
- 陶工程 陶工程
- 微波工程 微波工程
背景情况:
- 前体衍生的碳化 (SiC) 陶是有效的微波吸收器,但在高温下遭受剩余碳问题.
- 在恶劣环境中的应用,如高速飞机,受碳含量限制.
研究的目的:
- 开发一种新的碳化/碳化 (Mo2C/SiC) 微波吸收陶.
- 解决SiC陶中剩余碳的局限性,用于高温应用.
- 通过独特的2D板结构来增强微波吸收特性.
主要方法:
- 聚碳烯涂层硫化物 (PCS@MoS2) 的热解以形成Mo2C/SiC复合物.
- 在热解过程中,MoS2与自由碳之间进行受控反应,以减少碳含量并形成Mo2C.
- 利用MoS2的分层结构创建一个2D复合结构.
主要成果:
- Mo2C/SiC陶成功合成了碳含量降低的材料.
- 实现了二维复合结构,显著提高了微波吸收.
- 记录了8.96 GHz的最小反射损失 (RLmin) 为-46.49dB,厚度为2.6mm.
- 有效吸收带宽 (EAB) 覆盖了整个X频段 (8-12 GHz).
结论:
- 新型的Mo2C/SiC陶有效地减轻了SiC吸收器中的残留碳问题.
- 来自MoS2的2D板结构显著提高了微波吸收性能.
- 这种材料对高温微波吸收应用非常有前途.
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