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ALLOY OF R-T-B SYSTEM AND PROCEDURE FOR PRODUCTION OF ALLOY OF R-T-B SYSTEM, FINE POWDER FOR RARE EARTH CONSTANT MAGNET OF R-T-B SYSTEM, AND ALSO RARE EARTH CONSTANT MAGNET OF R-T-B SYSTEM
ALLOY OF R-T-B SYSTEM AND PROCEDURE FOR PRODUCTION OF ALLOY OF R-T-B SYSTEM, FINE POWDER FOR RARE EARTH CONSTANT MAGNET OF R-T-B SYSTEM, AND ALSO RARE EARTH CONSTANT MAGNET OF R-T-B SYSTEM
FIELD: metallurgy.;SUBSTANCE: alloy on base of R-T-B contains 0.05 wt % or less Mn also R, at least one of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Ho, Er, Tm, Yb and Lu; T is transition metal containing Fe at amount 80 wt % or more; B is substance containing B at amount 50 wt % or more and at least one of C and N at amount of not more 50 wt %. Alloy is produced by means of band casting with formation of plates of average thickness 0.1-1 mm; also average rate of melt metal supply to a cooling roller is regulated up to a level of at least 10 g/sec per 1 cm of width. Rare earth constant magnet is fabricated out of alloy.;EFFECT: alloy possesses fine homogenous structure, high magnet properties and coercitive force.;7 cl, 5 dwg, 1 ex
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机译:领域:冶金;物质:基于RTB的合金还含有0.05 wt%或更少的Mn,以及R,Sc,Y,La,Ce,Pr,Nd,Pm,Sm,Eu,Gd,Tb,Ho, ,、 T,Y和Lu; T是含有80重量%以上的Fe的过渡金属。 B是含有50重量%以上的B和50重量%以下的C和N中的至少一种的物质。通过带式铸造生产合金,形成平均厚度为0.1-1 mm的板;熔融金属向冷却辊的平均供应速率也应调节到每1 cm宽度至少10 g / sec。稀土永磁体由合金制成。;效果:合金具有良好的均匀组织,高磁性能和矫顽力。; 7 cl,5 dwg,1 ex
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