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- W2908349943 abstract "Abstract Grain boundary diffusion process (GBDP) with low melting-point alloy ribbons, namely Pr70Cu15Al15 (PCA), Pr65Tb5Cu15Al15 (PTCA-5) and Pr50Tb20Cu15Al15 (PTCA-20, at%), was applied to Nd-Fe-B sintered magnet (52 M) as thick as 6 mm. The coercivities of diffused magnets by PCA, PTCA-5 and PTCA-20 increase significantly to 19.6 kOe, 24.1 kOe and 24.3 kOe, respectively, from original 14.7 kOe. Microstructural investigations indicate that the coercivity enhancement of PCA magnet is mainly attributed to magnetic isolation by continuous Nd-rich grain boundary phases (GBP). However, the coercivity enhancement of PTCA-20 magnet is mainly owing to magnetic hardening by Tb-rich shells (TRS), and that of PTCA-5 magnet results from a combined strengthening of magnetic isolation by GBP and magnetic hardening by TRS. Meanwhile, the coercivity of PTCA-5 magnet is as high as that of PTCA-20 magnet, but the former consumes Tb only 0.60 wt%, lower than 1.23 wt% for the latter." @default.
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- W2908349943 date "2019-05-01" @default.
- W2908349943 modified "2023-10-17" @default.
- W2908349943 title "Microstructure and magnetic properties of Nd-Fe-B sintered magnet by diffusing Pr-Cu-Al and Pr-Tb-Cu-Al alloys" @default.
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- W2908349943 doi "https://doi.org/10.1016/j.jmmm.2018.12.110" @default.
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