Title :
Investigation of rapidly quenched Nd-Fe-B alloys for production of high-coercivity composite magnets
Author :
Kosobudsky, I.D.
Author_Institution :
Saratov State Univ., Russia
Abstract :
The paper is devoted to producing and studying magnetic properties of rapidly quenched neodymium-iron-boron based alloys (RQA). Extreme dependence of coercive force upon quenching ratio and alloy chemical composition (neodymium and boron content) is shown. Particles produced by quenching are shown to be X-ray amorphous and isotropic. By means of thermal influence it is possible to improve the magnetic characteristics of RQA and powders on their basis. The optimal annealing temperature is 600...800°C. Composite magnets, produced from the above RQA have the following properties: Br=0,53 T, iHc=1100 kA/m
Keywords :
annealing; boron alloys; coercive force; iron alloys; neodymium alloys; permanent magnets; powder metallurgy; rapid solidification; Nd-Fe-B; alloy chemical composition; annealing temperature; coercive force; high-coercivity composite magnets; quenching ratio; rapidly quenched alloys; Amorphous magnetic materials; Amorphous materials; Annealing; Boron alloys; Chemicals; Coercive force; Magnetic properties; Neodymium; Powders; Production;
Conference_Titel :
Electronic Instrument Engineering Proceedings, 2000. APEIE-2000. Volume 1. 2000 5th International Conference on Actual Problems of
Conference_Location :
Novosibirsk
Print_ISBN :
0-7803-5903-8
DOI :
10.1109/APEIE.2000.913098
