Title:
PERMANENT MAGNET
Document Type and Number:
Japanese Patent JP2020161507
Kind Code:
A
Abstract:
To provide a conventional rare-earth element-free regular alloy permanent magnet for solving the problems of small maximum energy product, low heat resistance, and small coercive force.SOLUTION: The permanent magnet contains an FeNi regular phase in which interstitial elements are diffused. The interstitial elements are carbon, nitrogen, or cobalt. The concentration of the interstitial elements decreases from a surface to an inside. The regularity is in a range of 0.05 to 1. The concentrations of carbon, nitrogen, and cobalt are 0.5 to 2, 1 to 2, and 0.2 to 10 wt.%, respectively.SELECTED DRAWING: Figure 1
Inventors:
KOMURO MATAHIRO
NOJIMA MASAFUMI
NOJIMA MASAFUMI
Application Number:
JP2017120979A
Publication Date:
October 01, 2020
Filing Date:
June 21, 2017
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H01F1/047; B22F3/00; C22C19/03; C22C38/00; C23C8/62; C23C8/66; C23C10/34
Attorney, Agent or Firm:
Yuji Toda