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:
Jun. 23, 1998
Filed:
Apr. 12, 1996
Brian J Higgins, Reading, PA (US);
James D Kahl, deceased, late of Robesonia, PA (US);
James D Kahl, Jr, legal representative, Womelsdorf, PA (US);
Teri Ann Boyer, legal representative, Laureldale, PA (US);
Jeni L Heenley, legal representative, Newmanstown, PA (US);
Reading Alloys, Inc., Robesonia, PA (US);
Abstract
Vanadium-aluminum master alloys with small amounts of refractory metals such as ruthenium, are made substantially free of refractory inclusions and with a substantially homogeneous microstructure by reacting vanadium oxides with excess aluminum through an aluminothermic reduction reaction in the presence of the refractory to yield the desired master alloy. A preferred homogeneous vanadium-aluminum-ruthenium alloy without inclusions contains from about 59 to 70% of vanadium, about 29 to 40% of aluminum, and about 1 to 10% of ruthenium, all based on the weight of the alloy. The substantially homogeneous and inclusion-free master alloy is then used to produce titanium base alloys of higher quality, such as 4% vanadium and 6% aluminum titanium base alloys containing small amounts of refractory metals, usually containing from about 0.1 to 1.0% of ruthenium.