EP 0984464 B1 20040728 - Process for producing Fe-B-R based permanent magnet having a corrosion-resistant film
Title (en)
Process for producing Fe-B-R based permanent magnet having a corrosion-resistant film
Title (de)
Verfahren zur Herstellung eines auf R-Fe-B basierten Dauermagneten mit korrosionsfester Schicht
Title (fr)
Procédé de fabrication d'un aimant permanent à base de R-Fe-B, pourvu d'un film résistant à la corrosion
Publication
Application
Priority
- JP 26247698 A 19980831
- JP 27950798 A 19981001
- JP 28662898 A 19981008
- JP 30373198 A 19981026
- JP 34991598 A 19981209
Abstract (en)
[origin: EP0984464A2] Producing a permanent magnet comprises placing the Fe-B-rare earth based magnet and metal pieces into a treating vessel for vibration and/or agitation. A metal film is formed on the magnet surface, with a sol solution applied to the metal film surface. The sol is produced by hydrolytic reaction, polymerizing metal compound and heat treating the resultant metal oxide film.
IPC 1-7
IPC 8 full level
H01F 41/02 (2006.01)
CPC (source: EP)
H01F 41/026 (2013.01)
Designated contracting state (EPC)
DE FI FR GB NL
DOCDB simple family (publication)
EP 0984464 A2 20000308; EP 0984464 A3 20000607; EP 0984464 B1 20040728; DE 69915554 D1 20040422; DE 69915554 T2 20050127; DE 69918915 D1 20040902; DE 69918915 T2 20050728; HK 1026060 A1 20001201; MY 117187 A 20040531; MY 119680 A 20050630
DOCDB simple family (application)
EP 99116399 A 19990820; DE 69915554 T 19990820; DE 69918915 T 19990820; HK 00105186 A 20000817; MY PI9903592 A 19990820; MY PI9903593 A 19990820