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- W3137891727 endingPage "167935" @default.
- W3137891727 startingPage "167935" @default.
- W3137891727 abstract "To increase the coercivity and corrosion resistance of Nd–Fe–B sintered magnets in high temperature and highly corrosive environments, low melting point Tb62.5Co37.5 alloy powders were added to the starting magnets through intergranular addition. In this study, the magnetic properties, corrosion resistance, and microstructure of magnets were investigated after adding various contents of Tb62.5Co37.5 powders. The coercivity of the magnet was significantly improved from 18.20 to 27.10 kOe when a small amount of Tb62.5Co37.5 powder was added; also, the remanence first increased and then slightly decreased. The microstructure and composition of the modified magnets were studied; it was found that the significant increase in coercivity and the negligible reduction in remanence is because of the densification, improved grain alignment, uniform and continuous Nd-rich phase distribution, as well as the generation of a (Nd, Pr, Tb)2Fe14B “core–shell” structure surrounding the main phase grain. Furthermore, the corrosion resistance of the magnets was improved significantly owing to the reduction in the electrochemical potential difference between the Nd2Fe14B main phase and the Nd-rich phase." @default.
- W3137891727 created "2021-03-29" @default.
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- W3137891727 date "2021-07-01" @default.
- W3137891727 modified "2023-10-12" @default.
- W3137891727 title "Improvement of the coercivity and corrosion resistance of Nd–Fe–B sintered magnets by intergranular addition of Tb62.5Co37.5" @default.
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- W3137891727 doi "https://doi.org/10.1016/j.jmmm.2021.167935" @default.
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