| Iron Oxide Nanopowder Synthesized by Electroerosion Dispersion Tetiana Prikhna1; Mykola Monastyrov2; Bernd Halbedel3; Semyon Ponomarov4; Fernand Marquis5; Athanasios Mamalis6; 1INSTITUTE FOR SUPERHARD MATERIALS, Kiev, Ukraine; 2OPEN INTERNATIONAL UNIVERSITY OF HUMAN DEVELOPMENT UKRAINE, Kiev, Ukraine; 3TECHNISCHE UNIVERSITAT ILMENAU, Ilmenau, Germany; 4INSTITUTE OF SEMICONDUCTOR PHYSICS, Kiev, Ukraine; 5SAN DIEGO STATE UNIVERSITY, San Diego, United States; 6NATIONAL TECHNICAL UNIVERSITY OF ATHENS, Athens, Greece; PAPER: 121/Nanomaterials/Regular (Oral) SCHEDULED: 15:55/Sat. 26 Oct. 2019/Coralino ABSTRACT: In this work, we present a method for simple preparation of magnetic iron oxide nanopowders by electroerosion dispersion (EED) of carbon steel in water. Magnetic nanoparticles (MNP) have attracted considerable interest in many fields of research and applied science due to their impressive properties. In the past, in order to fix biomedical issues, the development of MNPs has been promoted. For technical applications, such as wastewater treatment and absorption of electromagnetic waves, the existing synthesis approaches are too expensive and/or the producible quantities are too low. We describe the synthesis method, the laboratory installation and discuss the structural, chemical and electromagnetic properties of the syn-thetized EED powders, as well as their applicability for microwave absorption compared to other available ferrite powders. The electromagnetic properties of the EED powder allow microwave absorption values like that of hexaferrite powders and values considerably larger than that of the commercially available iron oxide powder: Magsilica. The production of the EED powder, however, is much simpler. Modern applications with high-frequency electromagnetic fields (satellite-TV, mobile funk, WLAN technologies, radar for traffic and aerial supervision, microwave heating, drying, sintering, up to automotive and medical applications) require very low-cost absorbing materials. This allows reduction of the electromagnetic radiation exposure on biological systems, assures the safe operation of instruments and equipment (prevention of wireless signal leakages) or facilitates modern communication applications [1]. References: [1] B. Halbedel, T. Prikhna/, P. Quiroz, J. Schawohl, T. Kups, M. Monastyrov Iron oxide nanopowder synthesized by electroerosion dispersion (EED) - Properties and potential for microwave applications // Current Applied Physics. - 2018. - Vol. 18. - P. 1410-1414 |
