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Propriétés magnétiques des alliages FeNi pour la production d'énergie thermomagnétique à haute température.

Magnetic properties of FeNi alloys for high-temperature thermomagnetic power generation.

Numéro : pap. 0018

Auteurs : LIU J., LONG Y., BAI D., et al.

Résumé

In this paper, the magnetic properties and heat transfer performance of Fe99.3-xNixMn0.4Si0.3 (x=33,35,37,39,41,43) alloys near the Curie temperature(Tc) were investigated. The results show that the Fe99.3-xNixMn0.4Si0.3 alloys have a wide Curie-temperature window and their Tc approximately linearly increases from 450K to 647K with the Ni content increasing from 33% to 43%. The change rate of the magnetic induction(?B•?T-1) near the Curie temperature shows the peak with changing the temperature. The ?B•?T-1 of Fe99.3-xNixMn0.4Si0.3 (x=37) alloys is higher than the reported maximum of 0.0202T•K-1 for second-order phase transition materials. Therefore, the Fe100-xNixMn0.4Si0.3 alloys are suitable for thermomagnetic power generation in the temperature range above 473K. The energy conversion process of a platy sample (0.2×0.2×0.001m3) of the alloy with x=37 in the static thermomagnetic power generation was simulated and the maximum electromotive force of 1.47V was generated in the simulation.

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Pages : 6

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Détails

  • Titre original : Magnetic properties of FeNi alloys for high-temperature thermomagnetic power generation.
  • Identifiant de la fiche : 30025019
  • Langues : Anglais
  • Source : 8th International Conference on Caloric Cooling (Thermag VIII). Proceedings: Darmstadt, Germany, September 16-20, 2018.
  • Date d'édition : 16/09/2018
  • DOI : http://dx.doi.org/10.18462/iir.thermag.2018.0018

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