Synthesis of Sm(Co, Fe)4B compounds by rapid quenching and subsequent heat treatment. (April 2019)

• Record Type: Journal Article
• Authors: Saito, Tetsuji; Nishio-Hamane, Daisuke
• Is Part Of: Intermetallics. Volume 107(2019:Apr.)
• Page Start: 6
• Page End: 9
• Publication Date: 2019-04
• Subjects: Intermetallic compounds -- Metallography -- Periodicals; Metallic glasses -- Periodicals; Composés intermétalliques -- Métallographie -- Périodiques; 669.94
• DOI: 10.1016/j.intermet.2019.01.001
• Languages: English
• ISSNs: 0966-9795

Abstract

Abstract: The Sm(Co, Fe)4 B alloys were prepared by rapid quenching and subsequent heat treatment. As-rapidly quenched SmCo4- x Fex B (x = 0–2) specimens mainly consisted of the amorphous phase. Subsequent annealing resulted in the formation of the SmCo4 B or Sm(Co, Fe)4 B phase. The annealed specimens exhibited high coercivity, with the value depending on the composition and annealing temperature. SmCo4-x Fex B (x = 0.5–1.5) specimens annealed at 973 K consisted of the Sm(Co, Fe)4 B phase and exhibited high coercivity, comparable to that of the high-performance rare-earth magnets. Highlights: As-rapidly quenched Sm(Co, Fe)4 B alloys mainly consisted of the amorphous phase. The SmCo4 B or Sm(Co, Fe)4 B phase was obtained by annealing of the amorphous specimens. The specimens with the SmCo4 B or Sm(Co, Fe)4 B phase exhibited high coercivity.