Erosion-Corrosion Behavior of N80 Steel in the Solution Containing Cl<sup>-</sup> and Sand

CHEN Hu; ZHOU Hao; WANG Shuli; WANG Minhui; ZHAO Shuhua; CAI Zheng

doi:10.11973/fsyfh-201809004

Corrosion & Protection > 2018 > 39(9): 668-672. > DOI: 10.11973/fsyfh-201809004

CHEN Hu, ZHOU Hao, WANG Shuli, WANG Minhui, ZHAO Shuhua, CAI Zheng. Erosion-Corrosion Behavior of N80 Steel in the Solution Containing Cl^- and Sand[J]. Corrosion & Protection, 2018, 39(9): 668-672. DOI: 10.11973/fsyfh-201809004

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Erosion-Corrosion Behavior of N80 Steel in the Solution Containing Cl^- and Sand

Jiangsu Key Laboratory of Oil-gas Storage and Transportation Technology, School of Petroleum Engineering, Changzhou University, Changzhou 213016, China

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Received Date: July 02, 2018

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The effect laws of NaCl content and sand particle size on the erosion corrosion of N80 steel in sandy and liquid-solid two-phase flow solutions were studied by a rotating cylindrical electrode scouring apparatus and an electrochemical workstation combined with weight loss method and electrochemical test method. The results showed that Cl^- played a crucial role in the erosion corrosion process of N80 steel, in the absence of NaCl, the corrosion loss of the sample was very small; when the NaCl mass fraction was 3.5%, the corrosion rate of the sample was the largest. The critical particle size of N80 steel for scouring corrosion was 0.125-0.21 mm.
- N80 steel,
- erosion-corrosion,
- NaCl concentration,
- sand particle size,
- electrochemical experiment

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Erosion-Corrosion Behavior of N80 Steel in the Solution Containing Cl^- and Sand