Investigation of the Effect of Fe3O4 Particles on the Interface of Gf-Pr-Fa Magnetic Composites

✍ Scribed by D. Dima; G. Andrei

• Publisher: John Wiley and Sons
• Year: 2003
• Tongue: English
• Weight: 250 KB
• Volume: 34
• Category: Article
• ISSN: 0933-5137
• DOI: 10.1002/mawe.200390073

✦ Synopsis

Abstract

The aim of this study is to characterize and to assess the quality and performances of a new class of soft magnetic composites, with ferrite additive, used for aircraft‐type instruments as well as in electronic and chemical industries. The ferrite additive introduced in the structure of the composite induces desired magnetic properties and thus improve the quality of the interface. A major structural defect of the organic matrix composite is recognized by the presence of void space, which must be reduced. It was found that the paramagnetic behaviour of the molecules of oxygen could control the scattering of the air bubbles in the mass of the organic matrix. Thus, the ferrite particles introduced in the material mixture play the role of a “vacuum cleaner” which “aspirates” the voids raised on the interface. Moreover, if when producing the composite, an external vibrating magnetic field is active, it could be possible to obtain the scattering of this void space in the mass of the organic matrix. Therefore, it is expected an enhancement of the interface fitness.