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HL: Fachverband Halbleiterphysik

HL 21: Focus Session: Highlights of Materials Science and Applied Physics II (joint session DS/HL)

HL 21.1: Vortrag

Freitag, 1. Oktober 2021, 10:00–10:15, H1

Additive manufacturing of permanent magnets based on (CoCuFeZr)₁₇Sm₂ — •Dagmar Goll, Felix Trauter, Philipp Braun, Judith Laukart, Ralf Löffler, Ute Golla-Schindler, and Gerhard Schneider — Aalen University, Materials Research Institute, Beethovenstr. 1, 73430 Aalen, Germany

Lab-scale additive manufacturing of (CoCuFeZr)₁₇Sm₂-based powder was performed to realize CoSm printed parts with hard magnetic properties. For manufacturing a special inert gas process chamber for laser powder bed fusion was used. A three-step annealing procedure analogous to sintered magnets was applied. This led to a coercivity of 2.77 T, remanence of 0.78 T and maximum energy density of 109.4 kJ/m³ for the printed parts. Compared to an isotropic sintered magnet of comparable composition and annealing procedure, the coercivity is of the same order. Due to the texture of the printed parts the remanence is 24 % larger.