High Temperature Aqueous Corrsion of Aluminum-Uranium and Aluminum-Silicon-Uranium Alloys^*

Tests in 350 C deionized water of aluminum-uranium alloys were made in an effort to predict behavior in this environment of aluminum-plutonium alloys, corrosion behavior of which is unknown. Aluminum-silicon-uranium alloys also were tested under the same conditions. Samples prepared by casting, of wrought material, and of castings by the cryolite process were compared. Tests showed no samples significantly distorted jackets when there were minor openings in the jackets. Aluminum alloys with less than 6 weight-percent uranium were unsatisfactory. Aluminum-silicon alloys containing up to 6 weight-percent uranium were satisfactory. Some as-cast aluminum-uranium alloys were preferable to aluminum-silicon. 4.6.5, 6.4.2, 3.5.9