Genome engineering of materials based on Ce doping, high-performance electromagnetic wave absorber for marine environment

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2024-10-09 DOI:10.1016/j.compositesb.2024.111882

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引用次数: 0

Abstract

Traditional microwave absorbing materials (MAM) are difficult to meet the current increasingly complex electromagnetic environment, MAM began to functionally integrated development to meet the needs of diversified applications. For the high humidity and high salt spray environment of the ocean, the development of electromagnetic absorber integrating microwave absorption (MA) and corrosion protection functions is imminent. In this work, high-quality genes were screened through materials genome engineering, and in-situ doping strategies of Ce gene were designed to synergistically enhance MA properties using composition modulation and structure modulation, the effective absorption bandwidth (EAB) of composite material WC@FCC1 can reach 5.62 GHz at an ultra-thin thickness of 1.66 mm. Thanks to the unique 4f orbital mechanism of Ce element, CeO₂ is endowed with excellent redox property, forming an oxide protective film on the surface, which prevents the entry of external corrosive media. The excellent corrosion protection performance of the composite material has been verified through electrochemical testing and molecular dynamics simulation. This work provides new design ideas for high-performance MAM, as well as new strategies and insights for functionally integrated electromagnetic absorber.

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基于掺杂 Ce 的材料基因组工程，用于海洋环境的高性能电磁波吸收器

传统的微波吸收材料（MAM）难以满足当前日益复杂的电磁环境，MAM 开始向功能集成化发展，以满足多样化的应用需求。针对海洋的高湿度、高盐雾环境，开发集微波吸收（MA）和防腐蚀功能于一体的电磁吸收材料迫在眉睫。本研究通过材料基因组工程筛选出优质基因，并设计了Ce基因原位掺杂策略，利用成分调制和结构调制协同增强MA性能，使复合材料WC@FCC1在1.66毫米超薄厚度下的有效吸收带宽（EAB）达到5.62 GHz。由于 Ce 元素独特的 4f 轨道机制，CeO2 具有优异的氧化还原特性，能在表面形成一层氧化物保护膜，阻止外部腐蚀介质的进入。通过电化学测试和分子动力学模拟验证了该复合材料优异的腐蚀防护性能。这项工作为高性能 MAM 提供了新的设计思路，也为功能集成电磁吸收器提供了新的策略和见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.