Permanent magnets based on R-Fe-B and R-Fe-C alloys

Details Permanent magnets based on R-Fe-B and R-Fe-C alloys Permanent magnets based on R-Fe-B and R-Fe-C alloys

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998rpph...61.1099b&link_type=abstract

Reports on Progress in Physics, Volume 61, Issue 9, pp. 1099-1266 (1998).

Physics

29

Scientific paper

A review is given on the basic properties of 2:14:1 hard magnetic phases as well as technological procedures used for manufacturing R-Fe-B and R-Fe-C permanent magnets. First, we analyse the phase diagrams, crystal structure of hard magnetic phases and composition ranges in which these phases form solid solutions, as a result of various types of substitution. Then, the magnetic properties of 0034-4885/61/9/001/img1 and 0034-4885/61/9/001/img2-based compounds are described. The routes used for manufacturing R-Fe-B and R-Fe-C permanent magnets are detailed. The magnets' microstructure as well as their coercivities are described in correlation with composition and manufacturing routes. The properties of nanostructure magnets are then presented. Finally, the stability of Nd-Fe-B and Nd-Fe-C magnets in various working conditions is analysed.

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