Title :
Property investigation of the REM-Co and REM-Fe-B alloy powders obtained by means of hydrogenous embrittlement and the permanent magnets on their basis
Author :
Kosobudskiy, I.D. ; Sevostyanov, V.P. ; Kouznetsov, M.V.
Author_Institution :
Saratov State Univ., Russia
Abstract :
Different in chemical composition alloy Sm-Fe-Cu-Zr-Co, Sm-Gd-Er-Co-Fe-Cu-Zr and Nd-Fe-Tb-B, Nd-Fe-Tb-Co-B ingots were dispersed by combination of hydrogenous embrittlement and grind in ball-vibrational mill as well as by breaking in highly intense disintegrator. It is shown that the hydrogenons embrittlement process can be controlled and there exists a principle ability to obtain powders with a specified granulometric composition. The powder obtained by hydrogenous embrittlement was compacted and fritted according to a certain program. The magnets obtained in such a way have more high properties than the magnets obtained by usual vibrational grinding
Keywords :
boron alloys; cobalt alloys; ferromagnetic materials; grinding; hydrogen embrittlement; iron alloys; permanent magnets; powder metallurgy; rare earth alloys; Nd-Fe-Tb-B; Nd-Fe-Tb-Co-B; Sm-Fe-Cu-Zr-Co; Sm-Gd-Er-Co-Fe-Cu-Zr; ball milling; chemical composition; hydrogenous embrittlement; permanent magnet; rare earth alloy powder; vibrational grinding; Absorption; Argon; Ball milling; Heating; Hydrogen; Magnetic properties; Neodymium; Permanent magnets; Powders; Temperature;
Conference_Titel :
Electronic Instrument Engineering Proceedings, 1998. APEIE-98. Volume 1. 4th International Conference on Actual Problems of
Conference_Location :
Novosibirsk
Print_ISBN :
0-7803-4938-5
DOI :
10.1109/APEIE.1998.768998
