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

Gutierrez Lopez, J. and Rodriguez Senin, E. and Pastor Caño, Jose Ignacio and Paris, Anna and Martin Sanz, Antonia and Levenfeld, B. and 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.

Description

Title: Microstructure, magnetic and mechanical properties of Ni-Zn ferrites prepared by Powder Injection Moulding
Author/s:
  • Gutierrez Lopez, J.
  • Rodriguez Senin, E.
  • Pastor Caño, Jose Ignacio
  • Paris, Anna
  • Martin Sanz, Antonia
  • Levenfeld, B.
  • Várez, A.
Item Type: Article
Título de Revista/Publicación: Powder Technology
Date: June 2011
ISSN: 0032-5910
Volume: 210
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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.

More information

Item ID: 12136
DC Identifier: http://oa.upm.es/12136/
OAI Identifier: oai:oa.upm.es:12136
DOI: 10.1016/j.powtec.2011.02.008
Deposited by: Memoria Investigacion
Deposited on: 10 Sep 2012 11:14
Last Modified: 21 Apr 2016 11:19
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