Characterization of the Structure and Magnetic Properties of Fe49Co2V made by the Powder Metal Injection Molding Route

摘要

The semi-hard magnetic alloy Fe49Co2V is widely used in electronics and automation. Many ofthese parts are complex ones which can be produced with significant advantages by the PIMtechnology. In this work the feedstock was prepared by mixing the starting powder with a“Solvent System” binder. The injected green samples of toroidal shape were first subjected tosolvent debinding. Secondary thermal debinding at optimized temperatures and sintering in thetemperature range 1370-1460oC was performed in hydrogen in an Elnik System furnace.Magnetic properties were measured from hysteresis graphs for soft magnetic materials and themain properties such as such as remanent induction Br coercive force Hcb, saturation induction Bsand relative permeability μr were determined. The hysteresis curves obtained were correlated tothe microstructures formed during sintering. The results obtained were compared with the datafor other technologies of preparing Fe-Co-V from available literature. It is shown that the PIMsamples reach magnetic property values comparable to those obtained by conventional methods.