Carbon nanotube arrays catalyzed by NiFeSiAl in chemical vapor deposition and hybridized with silica for microwave absorption and anti-corrosion

IF 3.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Vacuum Pub Date : 2025-04-03 DOI:10.1016/j.vacuum.2025.114312

Lingli Deng , Shengyuan Xu , Hongyan Zhang , Xinyu Mu , Yang Guo , Xiangyu Zhao , Xian Jian

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引用次数: 0

Abstract

Developing microwave absorbing materials that stably operate under high humidity and salt spray while maintaining durability remains a significant challenge. A novel NiFeSiAl/carbon nanotube array/SiO₂ (NFSA/CNTA/S) composite with dual microwave absorption and anti-corrosion functionalities is developed via a coupled catalytic chemical vapor deposition (CCVD) and sol-gel strategy. Ball-milled NFSA flakes act as both catalyst and magnetic component, while vertically aligned CNTA grown via CCVD enhance dielectric loss and form a conductive network. Magnetic losses from NFSA (hysteresis, eddy current, natural resonance) and dielectric losses from CNTA (conductivity, interface polarization) achieve broadband absorption. SiO₂ coating improves impedance matching and reduces corrosion current to 2.651 × 10⁻⁷ A/cm². The composite reaches a minimum reflection loss (RL_min) of −42.36 dB and effective absorption covering a substantial portion of the X and Ku bands. This coupled CCVD with sol-gel approach provides a pathway for designing novel NFSA/CNTA/SiO₂ hybrids with high-performance microwave absorption and anti-corrosion.

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来源期刊

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.