Multilayered gradient Ti<sub>2</sub>AlC<sub>0.5</sub>N<sub>0.5</sub> prepared by crystal/amorphous C diffusion for efficient electromagnetic absorption and thermal shielding.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 41057398.
- Also identified by DOI 10.1038/s41467-025-63975-1 and PMC identifier 12504429.
- Licence recorded as CC BY-NC-ND.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
The unique advantages of surface/interface engineering are pivotal in advancing the design and development of high-performance electromagnetic wave (EMW) absorption materials. We present a universal microwave molten salt carbon (C) diffusion control strategy based on surface/interface engineering. This method leverages microwaves to promote the amorphous transformation and rapid diffusion of C on the carbon fiber surface, allowing for the rapid and controlled formation of three-dimensional multilayered gradient core-shell structures, primarily consisting of Ti<sub>2</sub>AlC<sub>0.5</sub>N<sub>0.5</sub> MAX. This unique structure with cavities contributes to the incident and multiple EMW losses. TACN-1 exhibited an efficient reflection loss of -83.4 dB at a thickness of just 1.9 mm and effectively isolates internal radiant heat, making it a promising material for stealth applications. This study not only advances the application of diffusion-controlled surface/interface engineering but also introduces a universal approach for modulating multilayered gradient structures in MAX phase ceramics.