Reaction between Some Cesium-Iodine Compounds and the Reactor Materials 304 Stainless Steel Inconel 600 and Silver. Volume 2. Cesium Iodide Reactions.

摘要

The alloys 304 stainless steel and Inconel 600 were oxidized in steam at 1270 K while being exposed to cesium iodide vapor. The chemical data from subsequent analyses of these experiments are presented and discussed. Some cesium, but essentially no iodine, was retained with the oxide formed on the Inconel 600. There is a moderate correlation of cesium with the silicon content of the oxide but no correlation with any other element. Formation of a cesium silicate is indicated. Essentially no cesium or iodine was detected in the oxide layers formed on 304 stainless, in sharp contrast to the retention of cesium in previous experiments when cesium hydroxide vapor was used. Furthermore, cesium iodide vapor in an argon carrier was shown to be stable in the presence of silver at temperatures less than 1223 K. Also, HI and iodine vapors react rapidly with solid silver to form silver iodide at temperatures up to at least 1073 K. Surface reaction rate constants are given for these reactions.