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.
|Title of host publication||Euro PM 2014 Congress and Exhibition, Proceedings|
|Publisher||European Powder Metallurgy Association (EPMA)|
|Publication status||Published - 2014|
|Event||Euro PM 2014 International Conference and Exhibition - Salzburg, Austria|
Duration: 21 Sep 2014 → 24 Sep 2014
|Conference||Euro PM 2014 International Conference and Exhibition|
|Period||21/09/14 → 24/09/14|