Experimental evidence for anomalous grain boundary diffusion of Fe in Cu and Cu-Fe alloys
Sign Up to like & getrecommendations! Published in 2017 at "Acta Materialia"
DOI: 10.1016/j.actamat.2017.05.024
Abstract: Abstract Fe grain boundary diffusion is measured in 99.995 wt.% pure Cu and the Cu-Fe alloys with iron contents of 0.18, 0.45, 0.6 and 0.8 wt. % using the radiotracer technique and applying the 59Fe isotope. A… read more here.
Keywords: boundary diffusion; grain boundary; triple product;
Phase-field modeling of grain growth in presence of grain boundary diffusion and segregation in ceramic matrix mini-composites
Sign Up to like & getrecommendations! Published in 2021 at "Computational Materials Science"
DOI: 10.1016/j.commatsci.2021.110295
Abstract: Abstract The grain boundary diffusion and segregation can influence the grain growth kinetics, the grain size distribution, and therefore the mechanical properties of the ceramic matrix composites. The present paper proposes a phase-field modeling approach… read more here.
Keywords: boundary diffusion; grain boundary; grain growth; grain ... See more keywords
Grain boundary diffusion of W in lower mantle phase with implications for isotopic heterogeneity in oceanic island basalts by core-mantle interactions
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DOI: 10.1016/j.epsl.2019.115887
Abstract: Tungsten isotopes provide important constraints on the ocean-island basalt (OIB) source regions. Recent analyses of μ182W in modern basalts with high 3He/4He originating from the core-mantle boundary region reveal two distinct features: positive μ182W in… read more here.
Keywords: lower mantle; boundary diffusion; grain boundary; core mantle ... See more keywords
Coercivity enhancement and thermal-stability improvement in the melt-spun NdFeB ribbons by grain boundary diffusion
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Magnetism and Magnetic Materials"
DOI: 10.1016/j.jmmm.2017.08.047
Abstract: Abstract Rapidly quenched NdFeB ribbons with high coercivity were obtained by Nd 70 Cu 30 diffusion process. Samples with a high coercivity of 22.02 kOe at room temperature were obtained after grain boundary diffusion with 20 wt%… read more here.
Keywords: ndfeb ribbons; ribbons grain; grain boundary; diffusion ... See more keywords
Grain boundary diffusion behaviors in hot-deformed Nd2Fe14B magnets by PrNd-Cu low eutectic alloys
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Magnetism and Magnetic Materials"
DOI: 10.1016/j.jmmm.2017.08.085
Abstract: Abstract High coercivity of hot-deformed Nd 2 Fe 14 B magnets was obtained by grain boundary diffusion. Comparable squareness and similar magnetic properties for samples diffusing from side and pole surfaces show little discrepancies if… read more here.
Keywords: grain boundary; hot deformed; diffusion; low eutectic ... See more keywords
Coercivity enhancement in Nd-Fe-B magnetic powders by Nd-Cu-Al grain boundary diffusion
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Magnetism and Magnetic Materials"
DOI: 10.1016/j.jmmm.2018.02.082
Abstract: Abstract A significant enhancement in coercivity of Nd 7.92 Pr 2.20 Fe 83.91 Zr x B 5.57 Al 0.4−x powders was achieved by Nd 80 Cu 10 Al 10 grain boundary diffusion. The room temperature… read more here.
Keywords: enhancement magnetic; grain boundary; diffusion; coercivity enhancement ... See more keywords
Recent progress of grain boundary diffusion process of Nd-Fe-B magnets
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Magnetism and Magnetic Materials"
DOI: 10.1016/j.jmmm.2020.167227
Abstract: Abstract Energy crisis prompts the society to improve the utilization efficiency of traditional energies and develop new renewable energies. In industrial sector more than half of electric power sources are consumed by various kinds of… read more here.
Keywords: diffusion process; grain boundary; energy; magnet motors ... See more keywords
Progress on modification of microstructures and magnetic properties of Nd-Fe-B magnets by the grain boundary diffusion engineering
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Magnetism and Magnetic Materials"
DOI: 10.1016/j.jmmm.2020.167278
Abstract: Abstract Nd-Fe-B based magnets exhibit excellent magnetic properties and are being widely used in high-technology, information, energy and medical fields, etc. Nowadays, with the rapid development of the electric vehicle industries, Nd-Fe-B magnets have also… read more here.
Keywords: grain boundary; diffusion; magnetic properties; properties magnets ... See more keywords
Anisotropic behavior of grain boundary diffusion in hot-deformed Nd-Fe-B magnet
Sign Up to like & getrecommendations! Published in 2017 at "Scripta Materialia"
DOI: 10.1016/j.scriptamat.2016.10.017
Abstract: Abstract Grain boundary diffusion process using Nd70Cu30 was applied to the c-plane and ab-plane of hot-deformed Nd-Fe-B magnet. The coercivity was increased from 1.38 T to 2.44 and 2.20 T for the ab-plane and c-plane diffused specimens,… read more here.
Keywords: grain boundary; diffusion; hot deformed; deformed magnet ... See more keywords
Coercivity enhancement of hot-deformed Nd-Fe-B magnets by the eutectic grain boundary diffusion process using Nd62Dy20Al18 alloy
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DOI: 10.1016/j.scriptamat.2016.10.020
Abstract: Abstract The eutectic grain boundary diffusion process was applied to a 2-mm-thick hot-deformed Nd-Fe-B magnets using Nd62Dy20Al18 alloy as a diffusion source, realizing the coercivity enhancement from 0.91 T to 2.75 T with relatively small remanence deterioration… read more here.
Keywords: diffusion process; grain boundary; diffusion; boundary diffusion ... See more keywords
Formation mechanism of Tb-rich shell in grain boundary diffusion processed Nd–Fe–B sintered magnets
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DOI: 10.1016/j.scriptamat.2019.12.002
Abstract: Abstract We propose a new mechanism for the formation of Tb-rich shell in the Nd–Fe–B sintered magnet that was subjected to the grain boundary diffusion (GBD) process using TbH2. Tb-enriched liquid films form along grain… read more here.
Keywords: grain boundary; mechanism; boundary diffusion; rich shell ... See more keywords