Method for heat treating an object containing at least one rare-earth element with a high vapor pressure
AssigneeVacuumschmelze GmbH & Co. KG
InventorsKaan Üstüner, Matthias Katter, Christoph Brombacher, Daniela Benedikt
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Abstract
A method is provided for the heat treatment of an object comprising at least one rare-earth element with a high vapor pressure. One or more objects comprising at least one rare-earth element with a high vapor pressure are arranged in an interior of a package. An external source of the at least one rare-earth element is arranged so as to compensate for the evaporation of this same rare-earth element from the object and/or to increase the vapor pressure of the rare-earth element in the interior of the package, and the package is heat treated.
Claims18
A method for heat treating an object, the method comprising the following:
- providing a package comprising a plate, a box having a base and walls that surround the base, and a cover, wherein the base has a hole and the box comprises iron foil and/or the plate comprises an iron plate;
- placing a powder material onto the base of the box;
- arranging the plate on the powder material on the base of the box;
- arranging one or more objects on the plate, wherein the one or more objects include at least one of Sm, Dy, Er, Eu, and Yb;
- arranging an external source of the at least one of Sm, Dy, Er, Eu, and Yb within the box, the external source being provided by an alloy of iron and the at least one of Sm, Dy, Er, Eu, and Yb;
- placing the cover on the walls, thus forming an interior volume;
- wherein the powder material provides a mechanical obstacle to gas exchange between the interior volume and an environment outside of the interior volume of the package;
- and
- heat treating the package.
Dependencies are inferred from the claim text.