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| A STUDY OF INHIBITION MECHANISM OF PC-602 INHIBITOR FOR COOLING WATER |
| Wang Jing Huang Qingtao (Beijing Institute of Chemical Technology)Yang Wenzhi (Beijing University) |
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Abstract 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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Received: 25 February 1988
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[1] Wang Jing(王凊);Yu Zhkiang;et.al.,Proceedings of the 9th ICMC,Toronta Canada 4,131(1984)
[2] Ardrzejack,B.J.,Br.Corros.J.,14(3) ,176(1979)
[3] Nancollas,G.H.,Corrosion,39(3) ,77(1983)
[4] Bornong,B.J.,Corrosion,27(8) ,15(1921) |
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