RARE EARTH-IRON-NITROGEN SYSTEM ALLOY MATERIAL, METHOD FOR PRODUCING RARE EARTH-IRON-NITROGEN SYSTEM ALLOY MATERIAL, RARE EARTH-IRON SYSTEM ALLOY MATERIAL, AND METHOD FOR PRODUCING RARE EARTH-IRON SYSTEM ALLOY MATERIAL

摘要

Rare Earth with excellent magnetic properties can be obtained rare-earth magnet-iron-nitrogen based alloy and its manufacturing method , suitable for the raw material of the rare earth magnet - provides an iron-based alloy material and a method of manufacturing the same. The rare earth-iron-based alloy by heat-treating the powder in a hydrogen-containing atmosphere, a hydrogen compound of a rare earth element in the iron-containing water phase (2) (3) is to produce a multi-phase powders (1) is present in discrete. A multi-phase powders (1) compression molding the resulting powder compact to 4 of the vacuum, by heating 3 with a magnetic field applied to one or more of the T state, the rare earth-iron-based alloy to form a material (5). The rare earth-iron-based alloy in a nitrogen atmosphere the material 5, by heat treatment in the magnetic field is 3.5 T or more conditions, the rare earth-iron-nitrogen-based alloy to form a material (6). The rare earth-iron-based alloy material (5), a rare earth-iron-based alloy has a crystal of an organized oriented in the c-axis direction. By nitriding the magnetic field was applied to the iron-based alloy material condition (5), a rare earth-oriented organization of the rare-earth iron-nitrogen-based alloy material 6, is composed of a great nitride, a rare earth magnet excellent magnetic properties (7 ) can be obtained.