Development of Fe-based soft magnetic alloys by Metal Injection Moulding (MIM)

A. Páez-Pavón, A. Jiménez-Morales, L. Quintino, Telmo G. Santos, J. M. Torralba

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Soft magnetic alloys have suitable properties for being used in applications where high permeability, low coercivity and high saturation induction are required. The goal of the present study is to produce Fe-based soft magnetic parts by metal injection moulding (MIM) with optimal magnetic properties using non industrialized binder, which is based on polyolefins. Feedstocks with high powder load have been produced with the purpose of obtaining high density parts and, as a consequence, high magnetic properties. Three Fe-based alloys have been used, Fe-Ni, Fe-Si and Fe-Co. The feedstocks have been produced with 63 vol% of powder load and the binder system consists in polypropylene, paraffin wax and stearic acid. Feedstocks have been characterized by SEM and density measurements. After obtaining the green parts, a first evaluation of the magnetic properties was made. Two different thermal debinding cycles were used to study their effect on final properties. Sintered parts were characterized by optical metallography, density measurements and tensile features. Finally, the magnetic field along the magnetized sintered parts was measured.

Original languageEnglish
Title of host publicationEuro PM 2014 Congress and Exhibition, Proceedings
PublisherEuropean Powder Metallurgy Association (EPMA)
ISBN (Electronic)9781899072446
Publication statusPublished - 2014
EventEuro PM 2014 International Conference and Exhibition - Salzburg, Austria
Duration: 21 Sep 201424 Sep 2014

Conference

ConferenceEuro PM 2014 International Conference and Exhibition
CountryAustria
CitySalzburg
Period21/09/1424/09/14

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