Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Akihide Hosokawa"'
Recent Research Trend in Powder Process Technology for High-Performance Rare-Earth Permanent Magnets
Publikováno v:
KONA Powder and Particle Journal, Vol 40, Iss 0, Pp 74-93 (2022)
Higher performance is constantly required in rare earth permanent magnets, which are an indispensable component of the motors of electric vehicles. When producing sintered magnets, advanced structural control is necessary in the powder metallurgy pro
Externí odkaz:
https://doaj.org/article/9d8716c4332a4563a7685f5fac96501b
Autor:
Akihide Hosokawa, Kenta Takagi
Publikováno v:
AIP Advances, Vol 8, Iss 9, Pp 095019-095019-7 (2018)
High-pressure torsion (HPT) was applied to Nd-Fe-B/α-Fe nanocomposite materials for the following two purposes. The first is to obtain anisotropic nanocomposite magnets by development of deformation texture, and the second is to consolidate bulk mag
Externí odkaz:
https://doaj.org/article/91df5fd035754804a1606879908d1bee
Autor:
Akihide Hosokawa, Kenta Takagi
Publikováno v:
AIP Advances, Vol 8, Iss 5, Pp 055031-055031-5 (2018)
Multi-scale electron microscopy technique that combines transmission electron microscopy (TEM) and focused ion beam - scanning electron microscopy (FIB-SEM) was utilized to investigate the influences of the change in microstructure of Sm2(Fe0.95Mn0.0
Externí odkaz:
https://doaj.org/article/853382e6852d4a89b0d95c01f385b941
Recent Research Trend in Powder Process Technology for High-Performance Rare-Earth Permanent Magnets
Publikováno v:
KONA Powder and Particle Journal. 40:74-93
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b91c6c1d5612d9ca59aaf86062f7c4d9
https://doi.org/10.14356/kona.2023007
https://doi.org/10.14356/kona.2023007
Autor:
Akihide Hosokawa, Yusuke Hirayama
Publikováno v:
Scripta Materialia. 226:115251
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de8473c99a00e20c0a42462e872b0fcc
https://doi.org/10.1016/j.scriptamat.2022.115251
https://doi.org/10.1016/j.scriptamat.2022.115251
Publikováno v:
SSRN Electronic Journal.
Both stable Th2Zn17-type and metastable TbCu7-type phases of anisotropic Nd-Fe ultrafine particles are prepared selectively by controlling the cooling rate using the low-oxygen induction thermal plasma (LO-ITP) process. The cooling rate is controlled
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7024b5e2344832a1b10d83c4b3af06ef
https://doi.org/10.2139/ssrn.3692994
https://doi.org/10.2139/ssrn.3692994
Publikováno v:
Materials Letters. 294:129815
We developed a modified powder rolling technique wherein encapsulating Sm-Fe-N powders inside metallic sheaths made it possible to consolidate the aligned monocrystalline Sm-Fe-N fine particles into a form of sheet at elevated temperatures under nitr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74c0c1374fe186da4e7a588a83f76545
https://doi.org/10.1016/j.matlet.2021.129815
https://doi.org/10.1016/j.matlet.2021.129815
Publikováno v:
Acta Materialia. 213:116981
Our research group developed a novel low-oxygen powder metallurgy process and succeeded in producing anisotropic Sm2Fe17N3 sintered magnets from finely pulverized high-performance powder without coercivity degradation, but the maximum energy product
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f3086718272add263030ac4e3eee196
https://doi.org/10.1016/j.actamat.2021.116981
https://doi.org/10.1016/j.actamat.2021.116981
Publikováno v:
Journal of Magnetism and Magnetic Materials. 439:220-227
We have attempted to fabricate a nanocomposite Nd-Fe-Ti-B magnet. Flash-lamp rapid annealing treatments were performed for melt-spun ribbons to obtain the α-Fe/Nd 2 Fe 14 B composite microstructure, and the evolution of magnetic properties by the an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8706da8b6102eac26031a7484d7eacfb
https://doi.org/10.1016/j.jmmm.2017.05.023
https://doi.org/10.1016/j.jmmm.2017.05.023
The formation mechanism of the nanocrystalline cells in Sm 2 Fe 17 N x powder during overnitridation
Autor:
Akihide Hosokawa, Kenta Takagi
Publikováno v:
Acta Materialia. 136:366-377
It is known that an overnitridation process significantly improves the coercivity of coarse Sm-(Fe,M)-N magnet powder (M = Cr, Mn, Ti, V) and also introduces a unique microstructure in the particles wherein nanocrystalline cells are separated by amor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fde813e1b43f17b2163e6e647d219710
https://doi.org/10.1016/j.actamat.2017.07.019
https://doi.org/10.1016/j.actamat.2017.07.019