Application of metal injection moulding to soft magnetic materials

Abstract

Powder metallurgy is an effective way to produce the complex shaped soft magnetic materials, and also to decrease the eddy current loss in high frequency by subdividing the eddy current area due to the small grains. Especially, metal injection moulding (MIM) process allows nearly full dense and net shaping of a variety of engineering materials. The application of MIM process to hard and brittle materials such as ferromagnetic materials demonstrates the potential of this novel process. This study considers the processing of three types of soft magnetic materials such as Fe–6·5Si, Fe–9·5Si–5·5Al and Fe–50Ni alloy compacts through the MIM techniques using different types of powders to obtain high performance of soft magnetic properties.

Keywords

Metal injection moulding Ferromagnetic materials Soft magnetic properties Eddy current loss

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