The study is devoted to the development of compositions and technology for applying a radio-absorbing ferrite-containing coating to the surface of corundum armored ceramics products to ensure radar protection of technical weapons. The results of a study of radio absorption in the microwave range of ferrite absorbers of various crystal-chemical nature are presented. The objects of study were the synthetic compositions of hexaferrites and ferrites of the spinel group, including industrially manufactured ferrites of the 6000NM1, 3000NMS, 2500NMS, and 600NN grades. The most technological in manufacturing and reproducibility of properties are barium, barium - zinc, lithium and nickel-zinc ferrites. In the frequency dependence (from 8 to 18 GHz) of absorption of electromagnetic radiation of various ferrites, blurred extremums are found. The characteristic frequency dependence of the radio-absorbing properties of the investigated types of fillers indicates a single mechanism for the absorption of electromagnetic radiation. The research results are interpreted from the standpoint of the structural type of ferrites, the nature of the material formed by the microstructure and electromagnetic parameters. It is shown that magnetically soft and magnetically hard ferrites in terms of their physicochemical nature, crystal-chemical type and electromagnetic parameters correspond to the greatest extent to the requirements for active fillers. To ensure broadband absorption of an electromagnetic signal, soft magnetic and hard magnetic ferrites in combination with carbonyl iron and discrete carbon fibers should be used as active absorbers.
Ferrite Absorbers of Electromagnetic Radiation in Microwave Range
Lect. Notes in Networks, Syst.
International Scientific Siberian Transport Forum ; 2021 May 11, 2021 - May 14, 2021
International Scientific Siberian Transport Forum TransSiberia - 2021 ; Kapitel : 32 ; 284-293
18.03.2022
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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