The stability of W against U, rare-earth (RE) elements, Cd, and various chlorides was evaluated by melting and distillation testing. Three runs were performed with a W crucible to examine its reactivity: (i) RE melting by induction heating, (ii) salt distillation test of U-dendrite and various chlorides, and (iii) Cd distillation test from U–Cd alloy. The W crucible remained stable after the RE melting test using induction melting, exhibiting its applicability for induction heating systems. The salt distillation test with the W crucible at 1050°C exhibited the stability of W against U and various chlorides, showing no interaction. The Cd distillation test with the W crucible at 500°C showed that the crucible was very stable against Cd, maintaining a shiny surface. These results reveal that the W crucible is stable under operation conditions for both salt and Cd distillation, suggesting the high potential utility of W as a crucible material for application in cathode processes in pyroprocessing.

中文翻译：

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高温坩埚中钨坩埚对铀，稀土，镉和氯化物的阴极工艺的稳定性

通过熔融和蒸馏测试评估了W对U，稀土（RE）元素，Cd和各种氯化物的稳定性。用W坩埚进行了三轮试验以检查其反应性：（i）通过感应加热进行RE熔化，（ii）U-枝晶和各种氯化物的盐蒸馏试验，以及（iii）U-Cd合金的Cd蒸馏试验。在使用感应熔化的RE熔化测试之后，W坩埚保持稳定，表现出其在感应加热系统中的适用性。用W坩埚在1050℃下进行的盐蒸馏试验显示出W对U和各种氯化物的稳定性，没有相互作用。用W坩埚在500°C下进行的Cd蒸馏测试表明，该坩埚对Cd非常稳定，保持了光亮的表面。