<正> “PC一602”水质稳定剂的主要成份为多元醇磷酸酯、多元醇聚磷酸酯、聚磷酸盐、正磷酸盐等,以抑制腐蚀为主,兼有一定的阻垢性能。在循环冷却水和供暖循环水系统中使用的情况表明,“PC一602”的缓蚀效率高,适用 pH 范围宽(6.0～8.6),可用于碱性水处理系统,无毒性、无污染。本工作研究其缓蚀作用机理,这对指导实际应用和优选协同增效组份等是有意义的。
PC-602 (A mixture of polyhydric alcohol phosphate ester,phosphate and polyphosphate) is an efficient corrosion inhibitor for cooling water and possesses some antiscaling properties. In this paper,the inhibition mechanism of corrosion inhibitor PC-602 for carbon steel in cooling water were discussed.Potassium ferricyanide colour reaction method,Auger electron spectroscopy(AES)analysis and ellipso- metric measurement were adopted to study the composition and the growth of the inhibi tire film.The results showed that the protective film formed on carbon steel surface by the inhibitor was composed of iron oxide and complex compounds of phosphate ester,The polarization curve measureme- nts showed that PC-602 inhibited both the cathodic and anodic processes of the corrosion reaction.
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