Corrosion behavior of HRB400 and HRB400M steel bars in concrete under DC interference

被引：6
作者：
Ding, Qingmiao [1 ]
Gao, Yuning [1 ]
Liu, Ruiyang [1 ]
Li, Yaozhi [1 ]
Jin, Lei [2 ]
Ma, Han [3 ]
机构：
[1] Civil Aviat Univ China, Aeronaut Engn Inst, Tianjin 300300, Peoples R China
[2] China Natl Offshore Oil Corp CNOOC, Tianjin Pipeline Engn Technol Co Ltd, Tianjin 300452, Peoples R China
[3] Jiangsu Shagang Grp Co Ltd, Zhangjiagang 215600, Jiangsu, Peoples R China
来源：
SCIENTIFIC REPORTS | 2021年 / 11卷 / 01期
关键词：
D O I：
10.1038/s41598-021-03412-7
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The influence of direct current interference on the corrosion behavior of HRB400 and HRB400M steel bars in simulated concrete solution was studied using methods such as weight loss experiment, electrochemical experiment, surface technology and product analysis. The research results showed that with the increase of DC interference voltage, the corrosion rates of HRB400 and HRB400M steel bars would increase. The corrosion resistance of HRB400M steel bars was better than HRB400 steel bars under the experimental conditions. In addition, direct current interference could cause damage to the corrosion product layer on the surface of HRB400 steel bars and HRB400M steel bars. And the corrosion form and corrosion product types of HRB400 and HRB400M steel bars would be affected by direct current interference. The main corrosion products of HRB400 steel bars included gamma-FeOOH and Fe2O3 when it was not interfered by DC. When DC interference was applied, the main corrosion products included Fe3O4 and Fe2O3. The corrosion products on the surface of HRB400M steel bars were mainly Fe3O4 and Fe2O3, and the types of products increased to form Cr2O3 and MnFe2O4.
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页数：11
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