Title :
Analytical electron microscopy of Sm(Co,Fe,Cu, Zr)9
Author :
Fidler, Josef ; Bernardi, Johannes ; Ohashi, K. ; Tawara, Y.
Author_Institution :
Inst. of Appl. & Tech. Phys., Tech. Univ., Vienna, Austria
fDate :
9/1/1990 12:00:00 AM
Abstract :
Electron microscopic studies of as-cast Sm(Co,Fe,Cu,Zr)9 magnets revealed a hexagonal phase of the type Sm2(Co,Fe,Cu,Zr)17 with crystal lattice parameters of a=0.84 nm and c=3.2 nm. After a solid solution treatment, only rhombohedral (3R) and hexagonal (2H) grains were found. After an additional annealing treatment at 800°C, grains with a microcellular precipitation structure similar to the one found in Sm(Co,Fe,Cu,Zr)7.5 magnets occurred. In addition, in the as-cast and after-aged samples, other, partly unidentified Cu- or (Co,Fe)-enriched phases were detected
Keywords :
cobalt alloys; copper alloys; crystal atomic structure of alloys; electron microscope examination of materials; ferromagnetic properties of substances; iron alloys; permanent magnets; samarium alloys; zirconium alloys; Sm(CoFeCuZr)9; crystal lattice parameters; electron microscopy; hexagonal; hexagonal phase; microcellular precipitation structure; rhombohedral; Copper; Crystalline materials; Electron microscopy; Iron; Lattices; Magnetic force microscopy; Magnetic materials; Magnets; Microstructure; Zirconium;
Journal_Title :
Magnetics, IEEE Transactions on
