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| THE SYNERGISTIC EFFECT OF ORGANIC AMINES AND CHLORIDE ION ON THE CORROSION INHIBITION OF IRON IN ACIDIC SOLUTION |
| Zhou Shengqi and Cao Chunan(Institute of Corrosion and Protection of Metals; Academia Sinica) |
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Cite this article:
Zhou Shengqi and Cao Chunan(Institute of Corrosion and Protection of Metals; Academia Sinica). THE SYNERGISTIC EFFECT OF ORGANIC AMINES AND CHLORIDE ION ON THE CORROSION INHIBITION OF IRON IN ACIDIC SOLUTION. J Chin Soc Corr Pro, 1986, 6(4): 283-288.
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Abstract The effect of chloride ion on the corrosion inhibition of iron caused by dencylamine(DA), dipentylamine(DPA) and dodecylamine(DPA) has been investigated by curve-fitting method of weak polarization data and AC impedance technique. The results are verified by atomic absorption spectrum analysis of solutions. It is indicated that chloride ion has marked synergism with organic amines on corrosion inhibition of iron in acidic solutions and that the corrosion inhibition and the synergism are influenced by both the sort of organic amies and the Cl- concentration in solutions. It is also shown that the effect of organic amines on electrochemical behaviour of iron is changed obviously by the existence of Cl- in solutions.
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Received: 25 August 1986
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