Oxide strengthened molybdenum-rhenium alloy

Patent · Sat Jan 01 00:00:00 EST 2000

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., Pittsburgh, PA (United States)
• 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

Related Subjects

oxide
strengthened
molybdenum-rhenium
alloy
provided
method
steps
forming
slurry
containing
molybdenum
metal
salt
dispersed
aqueous
medium
selected
nitrates
acetates
lanthanum
cerium
thorium
heating
presence
hydrogen
form
powder
comprising
mixing
rhenium
pressing
compact
sintering
vacuum
ingot
compacting
reduce
cross-sectional
provides
preferred
mo-re-ods
contains
7-14
weight
2-4
volume
powder comprising
alloy containing
aqueous medium
metal oxide
metal salt
slurry containing
molybdenum oxide
molybdenum-rhenium alloy
molybdenum powder
alloy contains
lanthanum oxide
salt dispersed
comprising molybdenum
/75/