Title:
MANUFACTURE OF PERMANENT MAGNET
Document Type and Number:
Japanese Patent JPH06302411
Kind Code:
A
Abstract:
PURPOSE: To acquire magnetic characteristic which is higher than conventional one in an R-Fe-B-Ag permanent magnet by casting/hot working method.
CONSTITUTION: After hot working is performed at a temperature of 500°C or higher for an R, Fe, B, Ag-based alloy ingot whose 10 to 20% consists of R, 4 to 8% consists of B, 4% or less (exceptng 0) consists of Ag and a remainder thereof consists of Fe and impurities which are inevitable in manufacturing, it is thermally treated at a temperature range of 800 t0 1100°C. Thereby, high characteristic, especially high coercive force can be acquired. Furthermore, Fe is partially displaced with Co of 50% or less.
Inventors:
ARAI SEI
KOBAYASHI OSAMU
TAKAGI FUMIO
AKIOKA KOJI
KOBAYASHI OSAMU
TAKAGI FUMIO
AKIOKA KOJI
Application Number:
JP8654093A
Publication Date:
October 28, 1994
Filing Date:
April 13, 1993
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
C21D6/00; H01F1/053; H01F1/057; H01F1/08; (IPC1-7): H01F1/053; C21D6/00; H01F1/08
Attorney, Agent or Firm:
Kisaburo Suzuki (1 outside)