Oxide strengthened molybdenum-rhenium alloy

Patent · Fri Dec 31 23:00:00 EST 1999

OSTI ID:873153

Bianco, Robert ^[1]

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1. Cleveland, OH

Provided is a method of making an ODS molybdenum-rhenium alloy which includes the steps of: (a) forming a slurry containing molybdenum oxide and a metal salt dispersed in an aqueous medium, the metal salt being selected from nitrates or acetates of lanthanum, cerium or thorium; (b) heating the slurry in the presence of hydrogen to form a molybdenum powder comprising molybdenum and an oxide of the metal salt; (c) mixing rhenium powder with the molybdenum powder to form a molybdenum-rhenium powder; (d) pressing the molybdenum-rhenium powder to form a molybdenum-rhenium compact; (e) sintering the molybdenum-rhenium compact in hydrogen or under a vacuum to form a molybdenum-rhenium ingot; and (f) compacting the molybdenum-rhenium ingot to reduce the cross-sectional area of the molybdenum-rhenium ingot and form a molybdenum-rhenium alloy containing said metal oxide. The present invention also provides an ODS molybdenum-rhenium alloy made by the method. A preferred Mo--Re-ODS alloy contains 7-14 weight % rhenium and 2-4 volume % lanthanum oxide.

• Research Organization: WESTINGHOUSE ELECTRIC CORP
• DOE Contract Number: AC11-93PN38195
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 6102979
• OSTI ID: 873153
• Country of Publication: United States
• Language: English

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