The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 28, 2014
Filed:
Apr. 21, 2011
Herwig Schiefer, Frankfurt, DE;
Christoph Vogt, Hanau, DE;
Heiko Specht, Hanau, DE;
Jens Troetzschel, Neuwiedermus, DE;
Egbert Stiedl, Bruchkoebel, DE;
Herwig Schiefer, Frankfurt, DE;
Christoph Vogt, Hanau, DE;
Heiko Specht, Hanau, DE;
Jens Troetzschel, Neuwiedermus, DE;
Egbert Stiedl, Bruchkoebel, DE;
W. C. Heraeus GmbH, Hanau, DE;
Abstract
One aspect relates to a method for producing an alloy characterized by grinding tantalum to form a tantalum powder and grinding tungsten to form a tungsten powder; mixing the tantalum powder and the tungsten powder to form a blended powder. The weight fraction of tungsten powder in the blended powder is larger than in the desired alloy. A blended body is produced from the blended powder by a powder metallurgical route. A pre-alloy is produced by a first melting of the blended body and at least a fraction of at least one further metal by a melt metallurgical route. The alloy is produced by a second melting of the pre-alloy and the remaining fraction of at least one metal by a melt metallurgical route.