A Novel Self-Healing Conversion Film Formed on Rebar in Solution Containing Cerium and Molybdenum Ions

被引：3

作者：

An, Hongze ^{[1
]}

Ngendabanyikwa, Donatien ^{[1
,2
]}

Meng, Guozhe ^{[3
]}

Wang, Yanqiu ^{[1
]}

Wang, Junyi ^{[1
]}

Liu, Bin ^{[1
]}

Wang, Fuhui ^{[4
]}

机构：

[1] Harbin Engn Univ, Minist Educ, Key Lab Superlight Mat & Surface Technol, Corros & Protect Lab, Harbin 150001, Peoples R China

[2] Normal High Sch, Dept Nat Sci, Bujumbura 6983, Burundi

[3] Sun Yat Sen Univ, Sch Chem Engn & Technol, Zhuhai 519082, Peoples R China

[4] Northeastern Univ, Shenyang Natl Lab Mat Sci, Corros & Protect Div, 3-11 Wenhua Rd, Shenyang 110819, Liaoning, Peoples R China

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2022年 / 169卷 / 01期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

ENHANCED CORROSION-RESISTANCE; 316L STAINLESS-STEEL; PITTING CORROSION; PORE SOLUTIONS; PASSIVE FILMS; BEHAVIOR; NICKEL; MO; MN; PH;

D O I：

10.1149/1945-7111/ac453f

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel conversion film containing cerium and molybdenum was synthesized on the rebar surface, and then the pitting sensitivity of the rebar was improved in a concrete environment containing chloride. This conversion film presented a two-layer structure, which involved CeMoOx as the outer layer and FeOx as the inner layer. The film with two-layer structure exhibited a strong corrosion resistance after being immersed in an alkaline environment (pH = 12.5) added with 0.1 M NaCl, and the charge transfer resistance (R (t)) could reach 5.88 x 10(6) omega center dot cm(2) after immersion for 1600 h, which was approximately 2.5 times the initial R (t) value. Moreover, it was found that the film has a self-heal property when being damaged beyond the pitting potential. The anticorrosion mechanism of the film and its self-healing mechanism were discussed in depth in this study.

引用

页数：13

共 57 条

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