Hejun Li

Broadband electromagnetic absorption up to 1473 K enabled by dielectric frequency-dispersion engineering in ceramic composites

Bin W. Ren, Yujun Jia, Lehua Qi, Qiangang Fu et autres

Rising vehicle Mach numbers urgently necessitate broadband electromagnetic wave (EMW) absorbers capable of operating at even higher temperatures while maintaining environmental durability. However, Current high-temperature EMW absorbing materials face the restriction and temperature-sensitivity of dielectric frequency-dispersion (FD), which often forces reliance on …

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Bioinspired vacuum-driven approach enables mechanically robust, ablation-resistant sharp leading-edge composites

Xin Zhang, Yingjun Sun, Lingjun Guo, Huimin Liu et autres

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A Multi‐Step Deposition Strategy for β‐SiC Coatings on C f /C Composites: Achieving Breakthrough Oxidation Resistance and Mechanical Properties

Dou Hu, Bing Liu, Xiaoxuan Li, Jia Sun et autres

Abstract Current SiC coating technologies for anti‐oxidation C f /C composites, such as pack cementation, often rely on high‐temperature in situ reaction with severe mechanical property decay. Chemical vapor deposition (CVD) presents a promising alternative for fabricating anti‐oxidation SiC coatings with long …

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Morphology-driven Cu gradient distribution induces varied anti-ablation performance in C/C–ZrC composites

Yingjun Sun, Lingjun Guo, Xin Zhang, Huimin Liu et autres

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Multi-matrix co-optimization and artificial neural network-assisted property prediction of carbon fiber reinforced friction materials

Jie Fei, Lehua Qi, Zhaoxi Gou, Tengyang Zhang et autres

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Robust and thermostable silicon-based aerogels towards highly efficient thermal insulation and microwave absorption

Qi Liu, Leilei Zhang, Xinyi Wan, Yan Zhou et autres

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Bioinspired highly oriented SiC nanowire arrays for microwave absorption and thermal insulation

Jingwen Deng, Huimin Liu, Xin Zhang, Liyuan Han et autres

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A functionally graded C/C–HfC–SiC composite sharp leading edge merging lightweight and superior ablation resistance

Wei Li, Junshuai Lv, Xiaohong Shi, Menglin Zhang et autres

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Improving friction vibration and noise characteristics of carbon fiber-reinforced resin composites by utilizing Polyurethane's enhanced damping capacity

Zhaoxi Gou, Shuo Zhang, Wenting Zhu, Tengyang Zhang et autres

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Uniting Superior Electromagnetic Wave Absorption with High Thermal Stability in Bioinspired Metamaterial by Direct Ink Writing

Guanghui Feng, Lingxiang Guo, Hanyang Yu, Ying Li et autres

Abstract High‐performance electromagnetic wave (EMW) absorption materials are in great demand in intelligent communication and camouflage fields. Achieving efficient EMW absorption under some extreme environments, such as strong chemical corrosion and thermal impact, remains a huge challenge. Drawing inspiration from the natural …

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Twin Toughening‐Driven Martensitic Transformation Strategy Synergistic Improvement for Plasticity‐Thermal Shock Resistance of (Hf─Zr─Ti)C Ceramic Coating in Severe Thermal Environments

Yulei Zhang, Yanqin Fu, Li Tao, Jian Zhang et autres

Abstract The inherent brittleness and insufficient thermal shock resistance of ultra‐high temperature ceramic (UHTC) in severe thermal environments (above 2000 °C) remain significant challenges. This characteristic notably shortens their operational lifespan as thermal protective coatings on structural composites in reusable aerospace applications. …

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Electromagnetic Functions Modulation of Recycled By-Products by Heterodimensional Structure

Ze Nan, Wei Wei, Zhenhua Lin, Ruimei Yuan et autres

One of the significant technological challenges in safeguarding electronic devices pertains to the modulation of electromagnetic (EM) wave jamming and the recycling of defensive shields. The synergistic effect of heterodimensional materials can effectively enable the manipulation of EM waves by altering the …

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