Effect of additions of zinc stearate on the properties of sintered Nd-Fe-B magnets / Popov A. G.,Gerasimov E. G.,Terent'ev P. B.,Gaviko V. S.,Shunyaev K. Yu.,Mikhailova T. L.,Vas'kovskii V. O.,Kulesh N. A. // PHYSICS OF METALS AND METALLOGRAPHY. - 2013. - V. 114, l. 4. - P. 285-294.

ISSN/EISSN:

0031-918X / нет данных

Type:

Article

Abstract:

Zinc stearate additions have been used to increase the remanence of sintered Nd-Fe-B magnets produced by the powder metallurgy without powder pressing. Zinc stearate acts as an internal lubricant, i.e., it decreases the friction forces between the particles and favors an increase in the degree of texture of the powders, which is induced by the magnetic field. It is shown that the density and the magnetic hysteresis characteristics of sintered magnets produced using additions of 0.15 wt \% zinc stearate exceeds the corresponding values obtained for magnets produced without this addition at a filling density of powders in containers of more than 2.9 and 3.0 g/cm(3) in dry and wet states, respectively. Using additions of zinc stearate in the amount of 0.15\% with respect to the weight of the powder, magnets with a density of 7.55 g/cm(3), B (r) = 14.02 kG, H (c) = 7.91 kOe, and (BH)(max) = 46.1 MG Oe have been produced.

Author keywords:

Nd-Fe-B alloys; sintered magnets; powder metallurgy method; pressless process (PLP); internal lubricants; zinc stearate

DOI:

10.1134/S0031918X13040066

Web of Science ID:

ISI:000318179800002

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
Author-Email	apopov@imp.uran.ru
ResearcherID-Numbers	Terentev, Pavel/J-3539-2013 Gerasimov, Evgeny/J-3599-2013 Gaviko, Vasilii/K-4632-2013 Shunyaev, Konstantin/A-3916-2014 Kulesh, Nikita/C-2922-2014 Popov, Alexander/J-4754-2013
ORCID-Numbers	Terentev, Pavel/0000-0002-2348-6459 Gerasimov, Evgeny/0000-0002-1975-705X Gaviko, Vasilii/0000-0002-9841-9293 Kulesh, Nikita/0000-0001-7046-2671 Popov, Alexander/0000-0003-1159-1726
Funding-Acknowledgement	Russian Academy of Sciences, Ural Branch {[}12-M-23-2066]
Funding-Text	This work was supported in part by the Russian Academy of Sciences, Ural Branch (project no. 12-M-23-2066). For the experiments, the equipment of the Ural-M Center of Collaborative Access was used. We are grateful to N.V. Nikolaeva for the investigation of the morphology of powders at the Center of Collaborative Access of the Department of Electron Microscopy, Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, and to A. V. Shitov for measurements of the average size of powder particles.
Number-of-Cited-References	10
Usage-Count-Since-2013	24
Journal-ISO	Phys. Metals Metallogr.
Doc-Delivery-Number	133ZQ