Abstract
This paper reports the results of investigations carried out to determine the microstructure and magnetic properties of some Pr-based magnets represented by the formula Pr x Fe 77.9− x Co 16B 6Nb 0.1. Bonded magnets were prepared from cast and homogenized alloys using the hydrogenation, disproportionation, desorption and recombination process. The influence of Pr content on the magnetic properties of these magnets was studied. Praseodymium content has a significant influence on the magnetic behaviour of these magnets. Examination of the microstructures of the magnets revealed that the shape of the magnetic grains (<1 μm) changed with praseodymium content.
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