Die‐upset Pr‐Fe‐B‐type magnets from melt‐spun ribbons

Autor:	Yimei Zhu, Earl G. Brewer, C. D. Fuerst, D. O. Welch, R. K. Mishra
Rok vydání:	1994
Předmět:	Magnetic anisotropy Materials science Remanence Phase (matter) Demagnetizing field Metallurgy General Physics and Astronomy Melt spinning Coercivity Hot pressing Microstructure
Zdroj:	Journal of Applied Physics. 75:4208-4213
ISSN:	1089-7550 0021-8979
Popis:	We used consolidation (hot pressing) and deformation (die upsetting) techniques to produce magnetically anisotropic permanent magnets from melt‐spun PryCo100−y−xCx alloys. The primary phase in these magnets (16≤y≤24 at. %) was the hexagonal PrCo5 phase. The greatest alignment was obtained for low‐carbon compositions (0≤x≤2 at. %); in particular, Pr18Co81C produced a remanence of ∼8.7 kG and an energy product of 16.9 MG Oe. The addition of 1 at. % carbon enhanced the coercivity (Hcl≊5.9 kOe) by nearly 80% compared to the carbon‐free composition (Hcl≊3.3 kOe). Higher carbon levels (x≥4 at. %) resulted in even larger coercivities (Hcl≥10 kOe) but were accompanied by significantly lower remanences (Br≊6 kG).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d925deebd23baa3cbf0dc88365fcc1f3 https://doi.org/10.1063/1.356006 Zobrazit plný text záznamu