Permanent magnets are widely used in electric motors and generators, where efficiency and long lifetime are essential. A key challenge in these applications is reducing eddy current losses while keeping good magnetic performance, mechanical stability, and corrosion resistance. One promising solution is to combine magnets with different properties in a segmented design.

In this project, different Nd–Fe–B magnet grades will be combined using low-melting alloy interlayers. Ce-based magnets (N35–N40 grades) will be integrated with high-remanence Nd–Fe–B magnets (N50-N56 grades) to create segmented magnet structures and study how this combination affects overall performance.

The work will focus first on magnetic properties, including coercivity (Hc), remanent magnetization (Br), maximum energy product ((BH)max), and demagnetization curve squareness. Eddy current losses will then be analysed together with electrical resistivity measurement to better understand loss behaviour.

The mechanical strength of the segmented magnets will be investigated using bending tests, and their corrosion behaviour will be evaluated using standard electrochemical methods. Microstructural and phase analysis will be used to link the results to the segmented design.

The project is suitable for both an Advanced Research Lab (ARL) or a Master’s thesis, depending on duration and scope.

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