| LIU Zheng,GONG Min,XIONG Juan,ZHENG Xing-wen,LIN Xiu-zhou,LU Li-juan,ZHANG Ting.Effect of Polarization Potentials on Coating Stripping of Buried Steel Pipelines[J],42(1):32-34 |
| Effect of Polarization Potentials on Coating Stripping of Buried Steel Pipelines |
| Received:September 19, 2012 Revised:September 24, 2012 |
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| DOI： |
| KeyWord:buried steel pipeline coating cathodic protection cathodic delamination |
| Author | Institution |
| LIU Zheng |
Material and Chemical Engineering Department,Sichuan University of Science & Engineering,Zigong , China |
| GONG Min |
Material and Chemical Engineering Department,Sichuan University of Science & Engineering,Zigong , China |
| XIONG Juan |
Oil and Gas Field Company Management of Southwest, Chengdu , China |
| ZHENG Xing-wen |
Material and Chemical Engineering Department,Sichuan University of Science & Engineering,Zigong , China |
| LIN Xiu-zhou |
Material and Chemical Engineering Department,Sichuan University of Science & Engineering,Zigong , China |
| LU Li-juan |
Material and Chemical Engineering Department,Sichuan University of Science & Engineering,Zigong , China |
| ZHANG Ting |
Material and Chemical Engineering Department,Sichuan University of Science & Engineering,Zigong , China |
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| Abstract: |
| In order to study the effect of cathodic protection potential on coating stripping, the protection potential was improved , the on potential and instant-off potential data of buried pipline were collected, the distance after coating stripping was measured. The results show that when the instant-off potential is-1 . 2 V, the on potential and instant-off potential decrease with the increase of distance, but at some damage points this rule can not be met to the absolute value of the on potential and instantoff potential . The stripping distance for different anticorrosive coating pipelines is not the same. |
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