文献类型：期刊文献

英文题名：Insights into local corrosion induced by inclusions and thermodynamic stability of inclusions in oil-casing steel by zirconium treatment

作者：Gao, Ruizhi Wang, Linzhu Wang, Fan Yang, Shufeng Liu, Chao Chen, Chaoyi Li, Junqi Li, Xiang

第一作者：Gao, Ruizhi

机构：[1] School of Materials and Metallurgy, Guizhou University, Guizhou, Guiyang, China; [2] School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, China; [3] Key Laboratory for Corrosion and Protection of the Ministry of Education, Institute of Advanced Materials & Technology, University of Science and Technology Beijing, Beijing, China; [4] Guizhou Provincial University Key Laboratory of High-Performance Battery Materials, Guizhou University, Guizhou, Guiyang, China; [5] School of Materials and Energy Engineering, Guizhou Institute of Technology, Guizhou, Guiyang, China

第一机构：School of Materials and Metallurgy, Guizhou University, Guizhou, Guiyang, China

年份：2024

卷号：227

外文期刊名：Corrosion Science

收录：EI(收录号：20235015214580);Scopus(收录号：2-s2.0-85179469600)

语种：英文

外文关键词：Alumina - Aluminum oxide - Corrosion inhibitors - Corrosive effects - Localized corrosion - Magnesium compounds - Sodium chloride - Steel corrosion - Thermodynamic stability - Zirconia - Zirconium

摘要：This work investigates the localized corrosion behavior of zirconium-treated P110 oil-casing steel in 3.5 wt% NaCl solution. The influence of inclusions containing zirconium on localized corrosion is analyzed in detail by combining experiments with theoretical calculations. Inclusions primarily exist in the form of ZrO2-Al2O3. Slight corrosion of micro-cracks is observed at later stages of immersion. Zirconium treatment promotes passivation, transforming poorly corrosion-resistant CaS-MgAl2O4 inclusions into ZrO2 inclusions which mitigate the stress concentration induced by Al2O3 inclusions. The thermodynamic results indicate that stable ZrO2 inclusions form in P110 steel with Zr content exceeding 0.014 wt%, effectively inhibiting inclusion-driven localized corrosion. ? 2023 Elsevier Ltd