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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…
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Keywords:
boundary diffusion;
grain boundary;
triple product;
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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…
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Keywords:
boundary diffusion;
grain boundary;
grain growth;
grain ... See more keywords
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Published in 2020 at "Earth and Planetary Science Letters"
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…
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Keywords:
lower mantle;
boundary diffusion;
grain boundary;
core mantle ... See more keywords
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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%…
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Keywords:
ndfeb ribbons;
ribbons grain;
grain boundary;
diffusion ... See more keywords
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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…
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Keywords:
grain boundary;
hot deformed;
diffusion;
low eutectic ... See more keywords
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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…
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Keywords:
enhancement magnetic;
grain boundary;
diffusion;
coercivity enhancement ... See more keywords
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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…
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Keywords:
diffusion process;
grain boundary;
energy;
magnet motors ... See more keywords
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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…
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Keywords:
grain boundary;
diffusion;
magnetic properties;
properties magnets ... See more keywords
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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,…
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Keywords:
grain boundary;
diffusion;
hot deformed;
deformed magnet ... See more keywords
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Published in 2017 at "Scripta Materialia"
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…
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Keywords:
diffusion process;
grain boundary;
diffusion;
boundary diffusion ... See more keywords
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Published in 2020 at "Scripta Materialia"
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…
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Keywords:
grain boundary;
mechanism;
boundary diffusion;
rich shell ... See more keywords