STUDIES OF LEAD-15 WT % TIN ALLOY CORROSION IN AN INDUSTRIAL ENVIRONMENT

摘要

The corrosion properties of a lead-15 wt ％ tin alloy in aqueous solutions having a pH from 2 to 6 were studied as a function of contamination by sulfur dioxide, the chloride ion, the fluoride ion, and carbon dioxide. Electrochemical methods were used. Higher acidity caused higher corrosion rates. Sulfur dioxide and carbon dioxide were found to inhibit corrosion, the chloride ion to have a mild aggressive effect, and the fluoride ion to have a noticeable aggressive effect. Semiauantitative estimates of the effects were made.