(57) This invention relates to magnetic Fe-Cr-Co alloys which additionally contain Cu.
Disclosed are permanent magnet Fe-Cr-Co-Cu alloys which preferably contain 22-38 weight
percent Cr, 3-30 weight percent Co, 0.2-5 weight percent Cu, and remainder essentially
iron. Presence of limited amounts of other elements such as, e.g., ferrite stabilizing
elements or rare earth elements is not precluded. The new alloys have superior magnet
properties such as, typically, remanence B, in a range of 8000-14000 gauss, coercive
force Hc in a range of 200-1500 oersted (15,920-119,400 A/m), and energy product (BH)max in a range of 1.0-15.0 million gauss-oersted (79.6-1194 MG' A m). Alloys of the invention
may be processed to yield either isotropic or anisotropic magnet properties
|
|
