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OwnerMasami Kikuchiinventor
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Rare earth magnetic alloy fine powders are manufactured by placing a mixture of a rare earth metal and a transition metal as raw materials in a crucible, induction heating it in an Ar gas atmosphere, melting metal elements contained in the above mixture, injecting an Ar gas at a predetermined pressure from above the molten alloy to expel the above molten alloy in a downward direction from the nozzle port of the above crucible, and applying a jet stream of an inert gas to the above expelled molten alloy to collide the above expelled molten alloy with the above inert gas so as to scatter the above molten alloy and solidify it by quenching. A rare earth bond magnet and a rare earth sintered magnet are produced using rare earth magnetic alloy fine powders obtained by the above process, which is rarely oxidized on the surface, almost spherical and uniform in diameter.
A process for producing rare earth magnetic alloy powders, comprising the steps of:
A process for producing rare earth magnetic alloy powders, comprising the steps of:
An apparatus for producing rare earth magnetic alloy powders, comprising:
An apparatus for producing rare earth magnetic alloy powders, comprising:
A process for increasing the purity of an inert gas, comprising the step of passing the inert gas through an active metal to remove the residual oxygen contained in the inert gas.
An apparatus for producing rare earth magnetic alloy powders, comprising:
Dependencies are inferred from the claim text.