Electrochemical and surface analysis study of the influence of phosphorus on the corrosion of iron in calcium nitrate.

摘要

Intergranular stress corrosion cracking (IGSCC) of metallic alloys including iron is strongly influenced by the presence of grain boundary impurities such as phosphorus. In this study to determine how phosphorus affects the corrosion of iron, electrochemical polarization methods were used in conjunction with surface analyses employing ultra-high vacuum transfer. Specifically, these methods were used to examine the corrosion of iron, iron/phosphorus alloys, and iron implanted with phosphorus in deaerated 55 wt % Ca(NO(sub 3))(sub 2) solutions at 60(degree)C. 18 refs., 13 figs., 1 tab.