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Three common fabrication routes can be used to categorize these NdFeB-based bulk magnets: sintering, polymer bonding and hot deformation. Generally, the former type of magnet has a high-energy...

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Hence, more research works to fetch low-cost materials with superior properties, and faster production capabilities of 3D machines should be brought in. There are excellent review articles in additive manufacturing that provided overviews on metallurgical properties, structures, physical properties, and the relationship between thermal ...

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If n = 1, i.e., for the first Bohr orbit, the magnetic moment of an electron is 9.27×10 −24 A m 2 (SI units). The moment due to spin, termed the Bohr magneton μ B, is equal to the orbital moment of an electron for the first Bohr orbit, being used in magnetic moment calculations.. Quantum Mechanics of Ferromagnetism. According to Heisenbergʼs uncertainty principle, the position and ...

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Varied distribution of particle size was mixed with 3 wt% of epoxy binder and compacted by uniaxial hydraulic pressing machine to produce bonded isotropic green body. Bonded NdFeB green body was...

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Magnetic Refrigeration with Recycled Permanent ... - Wiley Online Library

the production of nd-fe-b magnets that involves the mining of the primary elements is environmentally detrimental: one ton of re produced, generates approximately 8.5 kg of fluorine and 13 kg of dust; and using concentrated sulfuric acid high-temperature calcination techniques to produce approximately one ton of calcined re ore generates 9600 to .

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The Impact Induced Demagnetization Mechanism in NdFeB Permanent Magnets. NASA Astrophysics Data System (ADS) Li, Yan-Feng; Zhu, Ming-Gang; Li, Wei; Zhou, Dong; Lu ...

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The great advantage of this technique is that the resulting alloy comprises a very homogenous microstructure with Nd-Fe-B grains in the microscale; the segregation of α-Fe is largely avoided. In a second step, the material is pulverized by hydrogen decrepitation (HD) and then jet-milled down to a grain size of typically 3-5 µm [ 34 ].