Method of making an alloy of tungsten and lanthana

A method of making an alloy of W and La oxide involves sintering an ingot contg. W powder and La hydroxide. The ingot is formed by pressing W and La hydroxide and the hydroxide is formed by heating La oxide in a water saturated atmos. until at least 95% of the oxide is converted to the hydroxide. Pr...

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Bibliographic Details
Main Authors PATRICIAN, THOMAS J, MARTIN, HARRY D., III
Format Patent
LanguageEnglish
French
German
Published 26.02.1997
Edition6
Subjects
ALLOYS
CHEMISTRY
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
FERROUS OR NON-FERROUS ALLOYS
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
METALLURGY
PERFORMING OPERATIONS
SOLDERING OR UNSOLDERING
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
WELDING
WORKING BY LASER BEAM
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Summary:A method of making an alloy of W and La oxide involves sintering an ingot contg. W powder and La hydroxide. The ingot is formed by pressing W and La hydroxide and the hydroxide is formed by heating La oxide in a water saturated atmos. until at least 95% of the oxide is converted to the hydroxide. Pref. the oxide is heated for 12 hrs at 60[deg]C. The pressed ingot is presintered at 1300[deg]C. prior to sintering, pref. at 1800[deg]C. The alloy contains 0.1-2.0 wt.%, pref. 1.2-1.6 wt.%, La oxide.
Bibliography:Application Number: EP19960112147