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Microstructure Selection Of Sm-Co-Al Alloys To Increase Magnetization, Brian Dick
Microstructure Selection Of Sm-Co-Al Alloys To Increase Magnetization, Brian Dick
Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research
An ever increasing demand for higher performing magnets drives the need for new and innovative methods to achieve this goal. Sm-Co rare earth permanent magnets have a unique eutectic microstructure that, through refinement, could become a two-phase magnet which would significantly increase their energy product. The eutectic structure of Sm8Co92 is comprised of αCo rods embedded within a Sm2Co17 matrix. If the rods are small enough to encourage exchange coupling and the matrix is smaller than the single domain limit, then an efficient two-phase magnet is created.
Refining the Co rods and matrix size …