MAGNET FROM RARE-EARTH METALS AND METHOD OF ITS PRODUCTION Russian patent published in 2019 - IPC H01F1/53 H01F1/59 B22F1/02 C22C38/00 

Abstract RU 2695082 C1

FIELD: manufacturing technology.

SUBSTANCE: invention relates to a rare-earth metal magnet, in particular a rare-earth metal magnet containing Sm, Fe and N, as well as a method for production thereof. Magnet from rare-earth metals contains magnetic phase including Sm, Fe and N. Magnetic phase is surrounded by Zn-phase, at that intermediate phase is present between magnetic phase and Zn-phase. Intermediate phase contains Zn. Content of oxygen in intermediate phase is higher than content of oxygen in Zn-phase. Phase Sm2O3 Ia-3-type is formed in intermediate phase. Method of producing a magnet from rare-earth metals involves mixing powder of an initial magnetic material and a powder of an improving reagent, which contains metal Zn and/or Zn alloy powder, in which the oxygen content is 1.0 wt% or less, as well as thermal treatment of the mixed powder.

EFFECT: invention makes it possible to create a magnet from rare-earth metals, having an excellent coercive force.

12 cl, 25 dwg, 5 tbl

Similar patents RU2695082C1

Title Year Author Number
PRODUCTION METHOD OF RARE-EARTH MAGNET AND DEVICE FOR ITS PRODUCTION 2019
  • Noritsugu Sakuma
  • Kazuaki Haga
RU2704018C1
PROCESS OF MANUFACTURE OF R-Fe-B PERMANENT MAGNETS 1995
  • Judzi Kaneko
  • Naojuki Isigaki
RU2112627C1
FUNCTIONAL-GRADIENT RARE-EARTH PERMANENT MAGNET 2006
  • Nakamura Khadzime
  • Khirota Koiti
  • Simao Masanobu
  • Minova Takekhisa
RU2389098C2
RARE-EARTH PERMANAENT MAGNET 2006
  • Nakamura Khadzime
  • Khirota Koiti
  • Simao Masanobu
  • Minova Takekhisa
RU2377680C2
RARE-EARTH CONSTANT MAGNET 2006
  • Nakamura Khadzime
  • Khirota Koiti
  • Simao Masanobu
  • Minova Takekhisa
RU2377681C2
PRODUCTION OF MATERIAL OF RARE EARTH PERMANENT MAGNET 2005
  • Nakamura Khadzime
  • Khirota Koiti
  • Minova Takekhisa
RU2367045C2
ALLOY OF R-T-B SYSTEM AND PROCEDURE FOR PRODUCTION OF ALLOY OF R-T-B SYSTEM, FINE POWDER FOR RARE EARTH CONSTANT MAGNET OF R-T-B SYSTEM, AND ALSO RARE EARTH CONSTANT MAGNET OF R-T-B SYSTEM 2008
  • Nakadzima Kenitiro
  • Khasegava Khirosi
RU2401878C2
R-T-B RARE EARTH SINTERED MAGNET 2011
  • Fukui Kazuja
  • Khasimoto Takakhiro
RU2559035C2
METHOD OF PRODUCING RARE-EARTH PERMANENT MAGNET MATERIAL 2007
  • Nakamura Khadzime
  • Minova Takekhisa
  • Khirota Koiti
RU2417138C2
SINTERED R-FE-B MAGNET AND METHOD FOR PRODUCTION THEREOF 2016
  • Khirota, Koiti
  • Nagata, Khiroaki
  • Kume, Tetsuya
  • Nakamura, Khadzime
RU2704989C2

RU 2 695 082 C1

Authors

Noritsugu Sakuma

Tetsuya Tedzi

Kadzuaki Khaga

Satosi Sugimoto

Masasi Matsuura

Dates

2019-07-19Published

2018-06-27Filed