Preparation of sintered Nd-Fe-B magnets by pressless process / Popov A. G.,Shitov A. V.,Gerasimov E. G.,Vasilenko D. Yu,Govorkov M. Yu,Bratushev D. Yu,Vyatkin V. P.,Shunyaev K. Yu,Mikhailova T. L. // PHYSICS OF METALS AND METALLOGRAPHY. - 2012. - V. 113, l. 4. - P. 331-340.

ISSN/EISSN:

0031-918X / нет данных

Type:

Article

Abstract:

Pressless process used for the preparation of sintered Nd-Fe-B magnets has been studied. The effect of the average particle size D (av), filling density rho(f), and powder-texturing conditions for obtaining density rho and desired magnetic hysteretic properties of sintered magnets has been investigated for both traditional technology (TT) and low-oxygen technology (LOT). The rho(f) magnitude ensuring the optimum relation between the density rho of sintered magnets and their degree of texture was shown to be 2.5-3.0 and 2.2 g/cm(3) for the TT and LOT, respectively. At lower rho(f) magnitudes, no required density of sintered magnets is reached, whereas at higher filling densities, a low level of texture and low remanence are realized. Optimum parameters of pulsed field inducing the high degree of texture in powders have been determined. The following properties were achieved for magnets prepared by pressless LOT: B (r) a parts per thousand yen 14.2 kG, H (c) a parts per thousand yen 8 kOe, and (BH)(max) a parts per thousand yen 47.9 MG Oe.

Author keywords:

Nd-Fe-B alloys; sintered magnets; pressless powder metallurgy method

DOI:

10.1134/S0031918X12040096

Web of Science ID:

ISI:000302807400003

Соавторы в МНС:

—

Другие поля

Поле	Значение
Month	APR
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Research-Areas	Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Metallurgy \& Metallurgical Engineering
ResearcherID-Numbers	Shunyaev, Konstantin/A-3916-2014 Popov, Alexander/J-4754-2013 Gerasimov, Evgeny/J-3599-2013
ORCID-Numbers	Popov, Alexander/0000-0003-1159-1726 Gerasimov, Evgeny/0000-0002-1975-705X
Funding-Acknowledgement	Ural Branch of the Russian Academy of Sciences {[}12-P-23-2005, 12-M-23-2066]; OFI URO RAS {[}11-23-07-UEMP]
Funding-Text	This work was supported in part by the Ural Branch of the Russian Academy of Sciences (project nos. 12-P-23-2005, 12-M-23-2066) and by the OFI URO RAS (project no. 11-23-07-UEMP).
Number-of-Cited-References	10
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	23
Journal-ISO	Phys. Metals Metallogr.
Doc-Delivery-Number	926BX