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Communication Dans Un Congrès Année : 2012

High Temperature Ageing of Fe-based Nanocrystalline Ribbons

Christian Martin
Rémi Robutel
  • Fonction : Auteur
Cyril Buttay
Fabien Sixdenier
Pascal Bevilacqua
Hervé Morel
Régis Meuret
  • Fonction : Auteur
  • PersonId : 839400

Résumé

The impact of long-term high-temperature stress on nanocrystalline Finemet materials is measured by keeping samples at 200 °C for 1300 hours. The standard industrialized, high permeability Finemet materials as well as the recently available low permeability Finemet materials are investigated. Characterizations are performed at different frequencies, temperatures and magnetic field excitations on both aged and non-aged samples. Their complex permeability is also measured during the ageing test. Irreversible changes are pointed out on permeability, coercive field and magnetic flux density at saturation. Regarding the design considerations for high temperature power electronics, the suitability of these materials is demonstrated but an ageing effect has to be considered nonetheless. The presented data can be extrapolated to several thousand hours at 200 °C using the presented empiric ageing law.
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Dates et versions

hal-00760373 , version 1 (03-12-2012)

Identifiants

  • HAL Id : hal-00760373 , version 1

Citer

Christian Martin, Rémi Robutel, Cyril Buttay, Fabien Sixdenier, Pascal Bevilacqua, et al.. High Temperature Ageing of Fe-based Nanocrystalline Ribbons. HiTEC 2012, May 2012, Albuquerque, United States. 6p. ⟨hal-00760373⟩
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