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48 Materials: One nominal U-5 w/o Fs alloy (Casting No. 5-1) and one nominal U-8 w/o Fs alloy (Casting No. 8 - 1 ) w e r e p r e p a r e d f r o m s c r a p uranium containing f r o m 300 to 800 ppm carbon. 145" d i a m e t e r x 15" long, w e r e p a r t of a group of 15 castings simultaneously injection c a s t f r o m the s a m e m e l t s . Table XIV details the chemical analyses of two castings, N o s . 3A4 and 4A2, m a d e f r o m the s a m e m e l t s , respectively, as N o s . 5-1 and 8-1.

I - 30 IV. PRODUCTION, TREATMENT, AND PROPERTIES O F MATERIALS ACTIVITY 5410 1 ~ P r e p a r a t i o n of High-Purity Plutonium (B. Blumenthal) The p r o g r e s s of the p r o g r a m of preparing high-purity plutonium by fused s a l t electrolysis m a y be s u m m a r i z e d as follows. The electrolytic cell h a s been built and is now running on uranium to show that the evolution of chlorine and hydrogen chlorine gas f r o m the electrolyte can be controlled and does not i n t e r f e r e with the operation of the glovebox and s y s t e m for helium purification.

This is i n c o n t r a s t to the rapid c o r r o s i o n f o r r e placement samples in distilled water. In the slower charnel the c o r r o s i o n r a t e s f o r both the original and replacement s a m p l e s w e r e lower than f o r the distilled water c a s e . A second s h o r t experiment performed during this q u a r t e r evaluated the c o r r o s i o n behavior of c e r t a i n selected aluminum-nickel alloys Conditions of 26OoC, distilled w a t e r , fast flow (22 feet/second) and low alloy surface-to-water volume r a t i o were chosen t o provide a rapid r a t e of corrosion.

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