Effect of Porous Structure on the Microwave Absorption Capacity of Soft Magnetic Connecting Network Ni/Al<sub>2</sub>O<sub>3</sub>/Ni Film



Wei, Hu, Cheng, Li and Shchukin, Dmitry ORCID: 0000-0002-2936-804X
(2020) Effect of Porous Structure on the Microwave Absorption Capacity of Soft Magnetic Connecting Network Ni/Al<sub>2</sub>O<sub>3</sub>/Ni Film. MATERIALS, 13 (7). E1764-.

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Abstract

Microwave radar absorbing materials have been the focus of the radar stealth research field. In this study, ceramic structured porous honeycomb-like Al<sub>2</sub>O<sub>3</sub> film was prepared by anodic oxidation, and an Ni layer was deposited on the Al<sub>2</sub>O<sub>3</sub> film via electrodeposition in a neutral environment to form a flower- and grain-like structure in a three-dimensional (3D) network Ni/Al<sub>2</sub>O<sub>3</sub>/Ni film. The films both have a through-hole internal structure, soft magnetic properties, and absorb microwaves. The dielectric loss values of two films were little changed, and the maximum microwave absorption values of flower- and grain-like Ni/Al<sub>2</sub>O<sub>3</sub>/Ni film were -45.3 and -31.05 dB with relatively wide effective bandwidths, respectively. The porous ceramic structure Al<sub>2</sub>O<sub>3</sub> interlayer prevented the reunion of Ni and isolated the eddy current to improve the microwave absorption properties. The material presented in our paper has good microwave absorption performance with a thin thickness, which indicates the potential for lightweight and efficient microwave absorption applications.

Item Type: Article
Uncontrolled Keywords: connected network Ni, Al2O3, Ni, soft magnetic properties, microwave absorption
Depositing User: Symplectic Admin
Date Deposited: 24 Apr 2020 13:30
Last Modified: 02 Feb 2024 15:37
DOI: 10.3390/ma13071764
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3083742