CORROSION STUDIES IN MOLTEN ALKALI CARBONATES. PART 1. SILVER METAL
RENSSELAER POLYTECHNIC INST TROY NY
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The corrosion of Ag in the molten ternary eutectic mixture of Li2CO3, Na2CO3 and K2CO3 over the 600900 C temperature range was investigated by the weight loss technique. A limited but finite Ag solubility is noted for non- faradaic or noelectrical-load type measurements. With an anodic current imposed, a solubility of Ag that correl-ATES WELL WITH THE FARADAIC PREDICTIONS IS FOUND. The thermodynamic method is applied to predict the saturation solubility of Ag ions in carbonate melts. While the assumption of solution of Ag as the non-oxidized metal is not ruled out, the view is advanced that dissolution observed on the non-faradaic corrosion experiments is most probably due to the presence of an oxidizing agent, such as oxygen, dissolved in small amounts in the molten carbonates.
- Inorganic Chemistry
- Properties of Metals and Alloys