University of California

The United States of America As Represented by the United States

Paul S Dunn

Haskell Sheinberg

James M Dickinson

Billy M Hogan

Homer D Lewis

John F Bingert

R Alan Patterson

Deniece R Korzekwa

A process of preparing a titanium-tantalum alloy including forming a suite mixture of essentially pure titanium powder and essentially pure tantalum powder, melting the mixture of titanium powder and tantalum powder by plasma torch melting under a pressure greater than atmospheric pressure to form a titanium-tantalum solution, and casting the molten solution of titanium-tantalum to form a solid homogeneous titanium-tantalum product is disclosed. The process can further include hot-rolling the cast solid homogeneous titanium-tantalum product to form a sheet of the titanium-tantalum product.

Titanium-tantalum alloys

Purification of tantalum by plasma arc melting. The level of oxygen and carbon impurities in tantalum was reduced by plasma arc melting the tantalum using a flowing plasma gas generated from a gas mixture of helium and hydrogen. The flowing plasma gases of the present invention were found to be superior to other known flowing plasma gases used for this purpose.

Purification of tantalum by plasma arc melting

Alloys of uranium and tungsten and a method for making the alloys. The amount of tungsten present in the alloys is from about 4 wt % to about 35 wt %. Tungsten particles are dispersed throughout the uranium and a small amount of tungsten is dissolved in the uranium.

High strength uranium-tungsten alloys

High strength uranium-tungsten alloy process

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Santa Fe, NM, United States of America

Paul S Dunn