Compatibility of Columbium and Tantalum Tubing Alloys with Refluxing Potassium
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CENTER
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This report summarized a proposed mechanism, based on experimental results, that describes the oxygen accelerated corrosive attack of columbium and columbium alloys by potassium under refluxing conditions, involving the formation and solution of complex oxides. This mechanism may be expected to be applicable, in principle, to the other refractory metal - alkali metal systems as well. Cases of gettered and ungettered alloys are considered. The various reaction products, their roles in the corrosion process, and their disposition are discussed.
- Properties of Metals and Alloys