Experimental research on corrosion behavior of X65 pipeline steel induced by DC interference under cathodic protection

Xiaolong Li; Tao Meng; Renyang He; Jinzhong Chen; Zhengxiao Wang

doi:10.1117/12.3032380

19 June 2024 Experimental research on corrosion behavior of X65 pipeline steel induced by DC interference under cathodic protection

Xiaolong Li, Tao Meng, Renyang He, Jinzhong Chen, Zhengxiao Wang

Author Affiliations +

Proceedings Volume 13172, Ninth International Symposium on Energy Science and Chemical Engineering (ISESCE 2024) ; 131720T (2024) https://doi.org/10.1117/12.3032380
Event: 9th International Symposium on Energy Science and Chemical Engineering, 2024, Nanjing, China

Abstract

The corrosion behavior of pipeline steel under DC current interference under cathodic protection was studied by means of electrochemical experiment. The results show that the cathodic protection polarization potential shifts forward and increases linearly with the increase of current density when the X65 pipeline steel is subjected to DC interference. When the DC current density is 10A/m², the cathodic protection system has failed. By gradually reducing the negative protection potential, the polarization potential of X65 test piece is shifted negatively. After providing negative protection potential of -1V, the polarization potential of X65 specimen reaches about -0.8V, which can provide good cathodic protection effect. With the continuous negative adjustment of the cathodic protection potential, the corrosion rate gradually increases, so the cathodic protection potential can give a better corrosion protection effect when it is about -1V.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xiaolong Li, Tao Meng, Renyang He, Jinzhong Chen, and Zhengxiao Wang "Experimental research on corrosion behavior of X65 pipeline steel induced by DC interference under cathodic protection", Proc. SPIE 13172, Ninth International Symposium on Energy Science and Chemical Engineering (ISESCE 2024) , 131720T (19 June 2024); https://doi.org/10.1117/12.3032380

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