{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T03:53:44Z","timestamp":1781495624867,"version":"3.54.1"},"reference-count":31,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2026,6,12]],"date-time":"2026-06-12T00:00:00Z","timestamp":1781222400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>In this study, Fe70Ni30 metal was deposited onto continuous glass fiber composites via magnetron sputtering, followed by surface coating with SiO2. The effects of key process parameters-including Fe70Ni30 sputtering duration (2, 5, 10, 20, and 30 min) and SiO2 surface coating-on the electromagnetic properties and microwave absorption performance of the materials were systematically investigated. Scanning electron microscopy (SEM) characterization revealed that as sputtering time increased, the metal coating evolved from discrete small particles into a continuous film. Cross-sectional SEM analysis further demonstrated the formation of a bilayer structure after SiO2 introduction. X-ray diffraction (XRD) patterns confirmed the presence of diffraction peaks corresponding to the Fe70Ni30 alloy solid solution. Electromagnetic parameter measurements indicated that the influence of sputtering time on electromagnetic properties was primarily pronounced during the metal layer growth stage; once a continuous film was formed, the variation in electromagnetic parameters diminished. Concurrently, the SiO2 coating exhibited a significant regulatory effect on dielectric parameters. Reflection coefficient calculations showed that the optimal absorption thickness for the single-layer material ranged from 2.5 to 3.0 mm, with the absorption peak shifting toward lower frequencies as thickness increased. However, the effective absorption bandwidth (EAB) was only 3\u20135 GHz, failing to meet wideband requirements. In contrast, the three-layer composite structure (total thickness: 3.8 mm) optimized via genetic algorithm achieved impedance gradient and loss synergy, expanding the EBW (R &lt; \u221210 dB) from 4.8 GHz (single layer) to 10 GHz (8\u201318.0 GHz)-a substantial improvement over the single-layer configuration. This work provides experimental evidence and technical support for the structural design and process optimization of lightweight, high-efficiency, wideband microwave-absorbing materials.<\/jats:p>","DOI":"10.3390\/ma19122552","type":"journal-article","created":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T03:01:27Z","timestamp":1781492487000},"page":"2552","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Research on the Absorption Properties of Fe70Ni30 Alloy\/SiO2 Coated Continuous Glass Fiber Composites by Magnetron Sputtering"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7298-0023","authenticated-orcid":false,"given":"Zhuohui","family":"Zhou","sequence":"first","affiliation":[{"name":"School of Materials Science and Engineering, Beihang University, Beijing 100095, China"},{"name":"AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mengyu","family":"Zhou","sequence":"additional","affiliation":[{"name":"AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhiyong","family":"Wang","sequence":"additional","affiliation":[{"name":"AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yan","family":"Zhao","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Beihang University, Beijing 100095, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,6,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"110565","DOI":"10.1016\/j.inoche.2023.110565","article-title":"An MXene coating with electromagnetic wave absorbing performance","volume":"151","author":"Ma","year":"2023","journal-title":"Inorg. 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