Microstructure, magnetic and mechanical properties of Ni-Zn ferrites prepared by Powder Injection Moulding

Gutierrez Lopez, J.; Rodriguez Senin, E.; Pastor Caño, Jose Ignacio; Paris, Anna; Martin Sanz, Antonia; Levenfeld, B. y Várez, A. (2011). Microstructure, magnetic and mechanical properties of Ni-Zn ferrites prepared by Powder Injection Moulding. "Powder Technology", v. 210 (n. 1); pp. 29-35. ISSN 0032-5910. https://doi.org/10.1016/j.powtec.2011.02.008.

Descripción

Título: Microstructure, magnetic and mechanical properties of Ni-Zn ferrites prepared by Powder Injection Moulding
Autor/es:
  • Gutierrez Lopez, J.
  • Rodriguez Senin, E.
  • Pastor Caño, Jose Ignacio
  • Paris, Anna
  • Martin Sanz, Antonia
  • Levenfeld, B.
  • Várez, A.
Tipo de Documento: Artículo
Título de Revista/Publicación: Powder Technology
Fecha: Junio 2011
Volumen: 210
Materias:
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ciencia de los Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Nowadays, the electronic industry demands small and complex parts as a consequence of the miniaturization of electronic devices. Powder injection moulding (PIM) is an emerging technique for the manufacturing of magnetic ceramics. In this paper, we analyze the sintering process, between 900 °C and 1300 °C, of Ni–Zn ferrites prepared by PIM. In particular, the densification behaviour, microstructure and mechanical properties of samples with toroidal and bar geometry were analyzed at different temperatures. Additionally, the magnetic behaviour (complex permeability and magnetic losses factor) of these compacts was compared with that of samples prepared by conventional powder compaction. Finally, the mechanical behaviour (elastic modulus, flexure strength and fracture toughness) was analyzed as a function of the powder loading of feedstock. The final microstructure of prepared samples was correlated with the macroscopic behaviour. A good agreement was established between the densities and population of defects found in the materials depending on the sintering conditions. In general, the final mechanical and magnetic properties of PIM samples were enhanced relative those obtained by uniaxial compaction.

Más información

ID de Registro: 12136
Identificador DC: http://oa.upm.es/12136/
Identificador OAI: oai:oa.upm.es:12136
Identificador DOI: 10.1016/j.powtec.2011.02.008
Depositado por: Memoria Investigacion
Depositado el: 10 Sep 2012 11:14
Ultima Modificación: 21 Abr 2016 11:19
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