Modeling of the corrosion behavior of B30 alloy in a deep‐sea environment by using the response surface methodology

Abstract

The corrosion behavior of B30 copper‐nickel alloy in a deep‐sea environment was investigated by using the self‐built loop apparatus based on the response surface methodology. The results indicated that all the environmental factors accelerate the corrosion of alloys. The degree of effect of the individual factors decreased in the following order—dissolved oxygen > temperature > flow rate > pressure. Moreover, there exist interaction effects between any two of the environmental factors, of which the one between temperature and pressure is the most significant. A mathematical relationship between these factors and the corrosion behavior for B30 alloy was established. The accuracy of the corrosion model was verified by immersion and electrochemical testing.