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Article Dans Une Revue Applied Sciences Année : 2023

Investigation of Energy Harvesting Capabilities of Metglas 2605SA1

Benjamin Ducharne
Gaël Sebald
Kanjuro Makihara

Résumé

In the framework of electromechanical energy conversion devices for vibrational energy harvesting, magnetostrictive materials are an attractive alternative solution to the brittleness of piezoelectric materials. Electromagnetic systems have low voltage output at a low frequency while magnetostrictive materials are suitable for a larger frequency bandwidth. In this work, a special experimental emphasis is placed on Fe$_{80}$Si$_9$B$_{11}$ (also known as Metglas 2605SA1) alloy. The ultimate energy conversion abilities are investigated by performing experimental Ericsson cycles as well as through theoretical predictions using a dedicated model for the magnetic curves at the material scale. Typical output magnetic energy densities ranged between 0.1 and 1 mJ/cm$^3$/cycle under moderate stress (<100 MPa) and magnetic excitation (up to 4 kA/m). Apart from its energy conversion abilities, Metglas 2605SA1 also features attractive characteristics for realistic applications in microgenerators, such as a low price, which is an important advantage for the mass production and cost-effectiveness of the harvester. Furthermore, its soft magnetic property reduces the need for high magnetic fields and yields a well-adapted solution from a system point of view. It is therefore shown that this material is a suitable conversion material according to the available stress and magnetic excitation magnitudes, in addition to economic considerations.
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Dates et versions

hal-04185085 , version 1 (14-06-2024)

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Yuanyuan Liu, Benjamin Ducharne, Gaël Sebald, Kanjuro Makihara, Mickaël Lallart. Investigation of Energy Harvesting Capabilities of Metglas 2605SA1. Applied Sciences, 2023, 13 (6), pp.3477. ⟨10.3390/app13063477⟩. ⟨hal-04185085⟩
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