Tantalum at high temperatures
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Tantalum at high temperatures
However, at high temperatures, the oxide film on the surface of tantalum is destroyed, so it can react with a variety of substances. Tantalum can react with fluorine at room temperature. At 150 degrees, tantalum is inert to chlorine, bromine and iodine. At 250 degrees, tantalum still has corrosion resistance to dry chlorine.
When heated to 400 degrees in chlorine containing water vapor, it can still remain bright. At 500 degrees, it will remain bright. It begins to corrode and reacts with tantalum above 300 degrees. It is inert to iodine vapor until the temperature reaches red heat.
Hydrogen chloride reacts with tantalum at 410 degrees to produce pentachloride. Hydrogen bromide reacts with tantalum at 375 degrees. . When heated to 200 degrees or lower, S can interact with Ta, and carbon and hydrocarbons can interact with tantalum at 800-1100 degrees.
