ALLOY FOR PERMANENT MAGNETS Russian patent published in 1999 - IPC

FIELD: electronics, instruments, radio engineering, computer engineering, industry. SUBSTANCE: alloy contains light and heavy rare-earth metals, boron, niobium, aluminum, copper and iron. Goal of invention is achieved by addition of cobalt, titan and zirconium and achieving ratio of components (in percents by weight) as follows: 10-34 of light rare-earth metals, 0.5-5.0 of heavy rare-earth metals, 0.8-2.0 of boron, 1*10e-5 - 2*10e-2 of niobium, 0.001-0.5 of aluminum, 0.001-0.5 of copper, 0.001-0.4 of zirconium, 0.001-0.1 of titan, 0.01-3.0 of cobalt, the rest is iron. Ratio of zirconium content to niobium content is within range of (20-100):1. Light rare-earth metals contained in alloy are neodymium and/or praseodymium. Heavy rare-earth metals contained in alloy are dysprosium and/or terbium. EFFECT: increased temperature stability in normal conditions, improved functional characteristics. 3 cl, 2 tbl, 1 ex