Magnesium-iron micro-composite for enhanced shielding of electromagnetic pollution. (15th April 2019)

• Record Type: Journal Article
• Authors: Pandey, Rachit; Tekumalla, Sravya; Gupta, Manoj
• Is Part Of: Composites. Number 163(2019)
• Page Start: 150
• Page End: 157
• Publication Date: 2019-04-15
• Subjects: Electromagnetic interference -- X-band -- Micro-composites -- Magnetic characteristics -- Electrical conductivity -- Porosity; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2018.11.038
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: All types of electronic equipment, especially microwave frequency ranged gears, experience the ill effects of electric and electromagnetic impedance. To electronic frameworks, such signals constitute a serious form of pollution. The impacts may go from simply irritating to catastrophic. To prevent such problem, this article aims at developing magnesium iron micro-composites; Mg/xFe (where x = 0, 5 and 15; denoting percentage of iron by weight) using disintegrated melt deposition (DMD) technique. This work studies the electrical conductivity, magnetic features, mechanical suitability, and electromagnetic interference shielding (EMI) capabilities of the composite. Observations were also made in reference to the impact of porosity on the shielding capability of the composite. The samples were tested in the X-band (8.2–12.4 GHz) to evaluate the properties. The results displayed an increased shielding capability with an increment in the amount of Fe microparticles. The study strives to accomplish that, with the addition of iron particulates of micron size, the electrical conductivity of the composites decreases and its magnetic strength increases. The ferromagnetic nature of the iron inclusions contributes critically towards the shielding mechanism of the composite.