Improved thermal stability of Nd-Ce-Fe-B sintered magnets by Y substitution. (1st April 2017)

• Record Type: Journal Article
• Authors: Peng, Baixing; Ma, Tianyu; Zhang, Yujing; Jin, Jiaying; Yan, Mi
• Is Part Of: Scripta materialia. Number 131(2017)
• Page Start: 11
• Page End: 14
• Publication Date: 2017-04-01
• Subjects: Nd-Fe-B permanent magnets -- Thermal stability -- Microstructure; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2016.12.013
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: To improve the thermal stability of the Nd-Ce-Fe-B sintered magnets, Y was incorporated via the binary main phase (BMP) approach. At the same substitution level for Nd (9 wt%), the absolute value of the coercivity temperature coefficient from 293 to 393 K for the Nd-Ce-Y-Fe-B magnet is 16.2% lower than that for the Nd-Ce-Fe-B one. This is attributed to the weakened temperature dependence of the magnetocrystalline anisotropy field and the magnetization as Y preferably enters into the 2:14:1 phase. It suggests that Y and Ce co-substitution for Nd is appealing to prepare low-cost RE-Fe-B permanent magnets with improved thermal stability. Graphical abstract: