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

通信作者：Wang, LZ[1];Yang, SF[2];Liu, C[3]

机构：[1]Guizhou Univ, Sch Mat & Met, Guiyang, Guizhou, Peoples R China;[2]Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing, Peoples R China;[3]Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Key Lab Corros & Protect,Minist Educ, Beijing, Peoples R China;[4]Guizhou Univ, Key Lab High Performance Battery Mat, Guizhou Prov Univ, Guiyang, Guizhou, Peoples R China;[5]Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang, Guizhou, Peoples R China

第一机构：Guizhou Univ, Sch Mat & Met, Guiyang, Guizhou, Peoples R China

通信机构：corresponding author), Guizhou Univ, Sch Mat & Met, Guiyang, Guizhou, Peoples R China;corresponding author), Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing, Peoples R China;corresponding author), Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Key Lab Corros & Protect,Minist Educ, Beijing, Peoples R 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);WOS:【SCI-EXPANDED(收录号:WOS:001159755800001)】；

语种：英文

外文关键词：Oil-casing steel; Inclusion; Corrosion resistance; Thermodynamic calculation

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.