Preparation of CIP@TiO2 composite with broadband electromagnetic wave absorption properties

IF 5.6 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY International Journal of Minerals, Metallurgy, and Materials Pub Date : 2024-01-01 DOI:10.1007/s12613-023-2707-5

{"title":"Preparation of CIP@TiO2 composite with broadband electromagnetic wave absorption properties","authors":"","doi":"10.1007/s12613-023-2707-5","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> Scholars aim for the improved impedance matching (Z) of materials while maintaining their excellent wave absorption properties. Based on the hydrolysis characteristics of isopropyl titanate, a simple preparation process for the coating of carbonyl iron powder (CIP) with TiO2 was designed. Given the TiO2 coating, the Z of the CIP@TiO2 composite was adjusted well by decreasing the dielectric constant. Moreover, the interfacial polarization of CIP@TiO2 was enhanced. Ultimately, the electromagnetic-wave (EMW) absorption property of the CIP@TiO2 composite was improved substantially, the minimum reflection loss reached −46.07 dB, and the effective absorption bandwidth can reach 8 GHz at the composite thickness of 1.5 mm. Moreover, compared with CIP, the oxidation resistance of CIP@TiO2 showed remarkable improvement. The results revealed that the oxidation starting temperature of CIP@TiO2 was about 400°C, whereas the uncoated CIP had an oxidation starting temperature of approximately 250°C. Moreover, the largest oxidation rate temperature of CIP@TiO2 increased to around 550°C. This work opens up a novel strategy for the production of high-performance EMW absorbers via structural design.","PeriodicalId":14030,"journal":{"name":"International Journal of Minerals, Metallurgy, and Materials","volume":"1 1","pages":""},"PeriodicalIF":5.6000,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Minerals, Metallurgy, and Materials","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s12613-023-2707-5","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Scholars aim for the improved impedance matching (Z) of materials while maintaining their excellent wave absorption properties. Based on the hydrolysis characteristics of isopropyl titanate, a simple preparation process for the coating of carbonyl iron powder (CIP) with TiO₂ was designed. Given the TiO₂ coating, the Z of the CIP@TiO₂ composite was adjusted well by decreasing the dielectric constant. Moreover, the interfacial polarization of CIP@TiO₂ was enhanced. Ultimately, the electromagnetic-wave (EMW) absorption property of the CIP@TiO₂ composite was improved substantially, the minimum reflection loss reached −46.07 dB, and the effective absorption bandwidth can reach 8 GHz at the composite thickness of 1.5 mm. Moreover, compared with CIP, the oxidation resistance of CIP@TiO₂ showed remarkable improvement. The results revealed that the oxidation starting temperature of CIP@TiO₂ was about 400°C, whereas the uncoated CIP had an oxidation starting temperature of approximately 250°C. Moreover, the largest oxidation rate temperature of CIP@TiO₂ increased to around 550°C. This work opens up a novel strategy for the production of high-performance EMW absorbers via structural design.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

制备具有宽带电磁波吸收特性的 CIP@TiO2 复合材料

摘要学者们的目标是在保持材料优异的吸波特性的同时，改善材料的阻抗匹配（Z）。根据钛酸异丙酯的水解特性，设计了一种简单的羰基铁粉（CIP）涂覆 TiO2 的制备工艺。涂覆 TiO2 后，CIP@TiO2 复合材料的 Z 值通过降低介电常数得到了很好的调节。此外，CIP@TiO2 的界面极化也得到了增强。最终，CIP@TiO2 复合材料的电磁波（EMW）吸收特性得到了大幅改善，最小反射损耗达到了 -46.07 dB，在复合材料厚度为 1.5 mm 时，有效吸收带宽可达 8 GHz。此外，与 CIP 相比，CIP@TiO2 的抗氧化性也有显著提高。结果显示，CIP@TiO2 的氧化起始温度约为 400°C，而未涂层的 CIP 的氧化起始温度约为 250°C。此外，CIP@TiO2 的最大氧化速率温度升至 550°C 左右。这项工作为通过结构设计生产高性能电磁波吸收器开辟了一种新策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

International Journal of Minerals, Metallurgy, and Materials 工程技术-材料科学：综合

CiteScore

9.30

自引率

16.70%

发文量

205

审稿时长

2 months

期刊介绍： International Journal of Minerals, Metallurgy and Materials (Formerly known as Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material) provides an international medium for the publication of theoretical and experimental studies related to the fields of Minerals, Metallurgy and Materials. Papers dealing with minerals processing, mining, mine safety, environmental pollution and protection of mines, process metallurgy, metallurgical physical chemistry, structure and physical properties of materials, corrosion and resistance of materials, are viewed as suitable for publication.