Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 46: Poster II
MA 46.33: Poster
Donnerstag, 21. März 2024, 15:00–18:00, Poster C
Effect of Zr and Cu alloying elements on microstructure and magnetic properties of Sm2Co17-type magnets — •B. Ekitli1, A. Aubert1, F. Maccari1, N. Polin2, X. Chen2, E. Adabifiroozjaei3, L. Molina-Luna3, B. Gault2, K. Skokov1, and O. Gutfleisch1 — 1FM, TU Darmstadt, Germany — 2MPIE, Düsseldorf, Germany — 3AEM, TU Darmstadt, Germany
Hard magnetic properties of 2:17-type Sm(CobalFewCuyZrx)z magnets are mainly controlled by domain wall pinning. The complex microstructure including a superposition of 2:17 cells, 1:5 cell boundaries, and Zr-rich z-lamellae is essential for optimal performance [1]. In addition, the microchemistry is key for pinning through Cu gradient concentration and layers in the 1:5 cell boundaries [2]. Within this complex composition and microstructure, each element plays a distinct role in developing the desired phases and magnetic properties. In this study, we focus on studying the influence of Cu and Zr content in developing the microstructure and hard magnetic properties using simpler composition than commercial ones. A systematic study has been conducted using the Sm(CobalCuyZrx)z composition, excluding Fe, with the values x= 0.023 & 0.031, y= 0-0.30, and z= 6.7 & 7.7. Thus, we can reveal the individual role of Zr and Cu for optimum magnetic performance through detail analysis of the magnetic properties (hysteresis and domain structure observation) and correlate them with microstructure (SEM, TEM and APT). We acknowledge funding by CRC TRR 270 HoMMage. [1] Gutfleisch, O. (2009). DOI: 10.1007/978-0-387-85600-1_12 [2] S. Giron et al (2024)
Keywords: Sm2Co17 type permanent magnets; Microstructure; Coercivity; Individual role; Domain wall pinning