Microwave absorption properties of carbonyl iron-based paint coatings for military applications

• Published in: 防务技术 Vol. 22; no. 4; pp. 1 - 9
• Main Authors: Wojciech Przyby?, Adam Januszko, Norbert Radek, Marcin Szczepaniak, Krzysztof A.Bogdanowicz, Ireneusz Plebankiewicz, Bogus?awa Szczodrowska, Robert Mazurczuk
• Format: Journal Article
• Language: English
• Published: Military Institute of Engineer Technology,ul.Obornicka 136,Wroc?aw,50-961,Poland%Kielce University of Technology,Faculty of Mechatronics and Mechanical Engineering,Al.1000-lecia P.P.7,Kielce,25-314,Poland 2023
• Subjects: Camouflage; Carbonyl iron; Radar; Attenuation; Coating
• ISSN: 2214-9147; 2214-9147
• DOI: 10.3969/j.issn.2214-9147.2023.04.001

The paper explores the possibilities of using carbonyl iron in the form of a powder for the manufacture of radar-absorbing paints-reducing the radar signature of the objects that they cover.The attenuation values in the range of 4-18 GHz for various coating thicknesses,ranging from 0.5 to 2.00 mm with 0.5 mm increment,and for different absorber content-75％and 80％,as well as the use of two different binders in the form of epoxy resins with hardeners,were investigated.For the frequency of 18 GHz and a 1.5 mm thick coating with a 75％absorber content,Epidian 112 resin and Saduramid 10/50 hardener used as a binder,and the maximum attenuation level obtained equalled 20.2 dB at 16 GHz.Additionally,the absorber particle size ranging from 3 to 4 μm and its higher mass content resulted in achieving the reflection loss above-12 dB in the entire 8-12.5 GHz range for layers between 1-and 1.5 mm thickness.The qualitative assessment of the tested samples in the context of camouflage in the radar range was also performed,using statistical analysis.