Consolidation of Sm5Fe17 powder by spark plasma sintering method

Abstract Sm 5 Fe 17 bulk materials, one of the newer permanent magnetic materials, were successfully produced by the spark plasma sintering method. The resultant bulk materials had high densities of 85–98%. When obtained by sintering at relatively lower temperatures, the Sm 5 Fe 17 bulk materials consisted of the Sm 5 Fe 17 and SmFe 3 phases, whereas they contained some α-Fe phase together with the Sm 5 Fe 17 and SmFe 3 phases when obtained by sintering at relatively high temperatures. High coercivity values, exceeding 2 MAm −1 , were found in the Sm 5 Fe 17 bulk materials consisting of the Sm 5 Fe 17 and SmFe 3 phases.

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