FACTORS AFFECTING THE COMPATIBILITY OF LIQUID CESIUM WITH CONTAINMENT METALS.
Final rept. Feb 65-May 66,
MSA RESEARCH CORP EVANS CITY PA
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The mechansims of corrosive attack by alkali metals have been investigated in both static and dynamic systems. Two-phase natural convection loops were constructed from Haynes alloy 25 and the refractory alloys Cb-1 Zr and Ta-10W. Considerably greater dissolutive attack was noted with condensing vapors in these dynamic systems than in static or reflux capsules tested previously. The thermal gradient mass transfer of nickel, iron and molybdenum was measured in both cesium and potassium using a new gravimetric technique. This method was also used for the Haynes alloy 25 and Nb-1Zr alloy. These metals were found to have a resistance to alkali metal attack in the order NiFeMoCb. In the transfer of the non-metallic contaminating species. Attemps were made towards measuring the diffusion of 182Ta through cesium at 2000 F. The results have indicated that diffusion of tantalum through cesium is rapid and the controlling step appears to be the dissolution of the metal. Author
- Properties of Metals and Alloys