The solubility of Ca metal has been measured in solutions comprised of varying amounts of CaO in CaCl2. The investigation has included solubility determinations at 850 and 900°C. The experimental work involved quenching specimens of selected compositions from elevated temperatures to preserve the high-temperature phase distribution. The reacted specimens were analyzed for dissolved Ca and for CaO composition. Data are presented which establish the effects of CaO composition on the solubility of Ca. Relevant thermodynamic parameters were determined from the solubility data. Additionally, the significance of this work to pyrochemical processing involving the Ca-CaO-CaCl2 system is discussed.
This report outlines the materials compatibility tests conducted on DOP-26 iridium alloy and carbon. The carbon used was in the form of woven graphite as present in the impact shell used to encase plntonia in nuclear heat sources. In addition, compatibility tests of the DOP-26 alloy with plutonia are described. The reactivity observed in both systems is discussed.
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