Title :
Formation of multi-polar crystalline and magnetic grain orientation for manufacturing one-piece rotor magnets from Nd-Fe-B alloy and monocrystalline Fe-Co-Cr
Author :
Gridnev, A.I. ; Rastegaev, V.S. ; Stadnik, I.P.
Author_Institution :
NPO Magneton, Vladimir, USSR
fDate :
9/1/1989 12:00:00 AM
Abstract :
The authors discuss the problems related to the formation of the orienting magnetic field during compaction of Nd-Fe-B powder and thermomagnetic treatment of Fe-Co-Cr single-crystal magnets. The orientation of the magnetization vector that provides maximum magnetic flux has been calculated for quadripolar magnets as an example. Ways to obtain optimum orientation have been found. It has been shown that the application of one-piece multipolar magnets makes it possible to increase magnetic induction in the operational gap by 20-40%
Keywords :
boron alloys; chromium alloys; cobalt alloys; iron alloys; magnetic fields; magnetic flux; materials preparation; neodymium alloys; permanent magnets; rotors; thermomagnetic treatment; Nd-Fe-B alloy; Nd-Fe-B powder; compaction; magnetic grain orientation; magnetic induction; magnetisation vector orientation; manufacturing; maximum magnetic flux; monocrystalline Fe-Co-Cr; multipolar crystalline orientation; multipolar magnets; one-piece rotor magnets; optimum orientation; orienting magnetic field; quadripolar magnets; single-crystal magnets; thermomagnetic treatment; Crystallization; Iron; Magnetic flux; Magnetic materials; Magnetization; Manufacturing; Permanent magnets; Powders; Soft magnetic materials; Surfaces;
Journal_Title :
Magnetics, IEEE Transactions on
