Process for producing pure ammonium perrhenate
AssigneeH.C. Starck GmbH
InventorsARMIN OLBRICH, MATTHIAS JAHN, JULIANE MEESE-MARKTSCHEFFEL, RUEDIGER ZERTANI
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Abstract
The present invention provides an ammonium perrhenate containing less than 5 ppm of potassium.
Claims7
An ammonium perrhenate containing less than 5 ppm of potassium.
A method of using an ammonium perrhenate containing less than 5 ppm of potassium as a precursor for the preparation of at least one of a pure rhenium compound and a pure rhenium metal for use in a superalloy, the method comprising:
- providing an ammonium perrhenate containing less than 5 ppm of potassium;
- introducing the ammonium perrhenate as a precursor in the least one of a rhenium compound and a rhenium metal so as to produce the at least one of a pure rhenium compound and a pure rhenium metal;
- and
- applying the at least one of a pure rhenium compound and a pure rhenium metal as an alloying metal in the superalloy.
A method of using an ammonium perrhenate containing less than 5 ppm of potassium as a precursor for the preparation of at least one of a pure rhenium compound and a pure rhenium metal to coat a rotary X-ray anode, the method comprising:
- providing an ammonium perrhenate containing less than 5 ppm of potassium;
- introducing the ammonium perrhenate as a precursor in the least one of a rhenium compound and a rhenium metal so as to produce the at least one of a pure rhenium compound and a pure rhenium metal;
- providing an X-ray anode;
- and
- coating the X-ray anode with the at least one of the pure rhenium compound and the pure rhenium metal.
Dependencies are inferred from the claim text.