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| AN EIS INVESTIGATION OF THE MECHANISM OF ALUMINUM POLYPHOSPHATE AS ANTI-RUST PIGMENT |
| LIU Hongwei XU Gang SONG Guangling LIN Haichao CAO Chu'nan(State Key Laboratory of Corrosion and Protection;Institute of Corrosion and Protection of Metals;Chinese Academy of Sciences; Shenyang 110015)LIU Yazhou WANG Dechun HE Ruiquan FAN Xiaodong (Daqing |
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Abstract An investigation of the corroison prevention performance of epoxy coating containing aluminum polyphosphate was conducted using electrochemical impedance spectroscopy (EIS). When the weight percentage of aluminum polyphosphate in coating reached 20%, the epoxy coating exhibited the best performance, and the mechanism of the active anti-rust pigment was discussed. For the study of paint formulation EIS presented consistent conclusions with those from seawater immersion testing. The complicated time dependence of EIS plots indicated that the corrosion control step of metal under coating changed from diffusion controlled step to electrochemical reaction controlled step.
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Received: 25 June 1997
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Cite this article:
LIU Hongwei XU Gang SONG Guangling LIN Haichao CAO Chu'nan(State Key Laboratory of Corrosion and Protection;Institute of Corrosion and Protection of Metals;Chinese Academy of Sciences; Shenyang 110015)LIU Yazhou WANG Dechun HE Ruiquan FAN Xiaodong (Daqing. AN EIS INVESTIGATION OF THE MECHANISM OF ALUMINUM POLYPHOSPHATE AS ANTI-RUST PIGMENT. J Chin Soc Corr Pro, 1997, 17(3): 215-220.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1997/V17/I3/215
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