UV illumination on the atmospheric corrosion of Q450 weathering steel depositing with NH4Cl

被引：2
|
作者：
Song, L. -Y. [1 ]
Li, W. -H. [1 ]
Wang, W. [1 ]
Liu, X. -J. [1 ]
Liu, X. -Y. [2 ]
Cheng, Q. -L. [3 ]
机构：
[1] Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China
[2] Qingdao Univ, Qingdao 266071, Peoples R China
[3] SINOPEC Qingdao Res Inst Safety Engn, 218,Yanan 3rd Rd, Qingdao 266700, Peoples R China
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2018年 / 69卷 / 01期
基金：
美国国家科学基金会;
关键词：
ammonium salt; atmospheric corrosion; corrosion products; semiconductor properties; Q235; CARBON-STEEL; PHOTOELECTROCHEMICAL ANTICORROSION; PASSIVE BEHAVIOR; PHOTO-CORROSION; VISIBLE-LIGHT; BETA-FEOOH; ZINC; NACL; FILM; 304-STAINLESS-STEEL;
D O I：
10.1002/maco.201709659
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The studies of UV illumination and ammonium salt on the atmospheric corrosion of steel were rare. The combined effect of UV illumination and NH4Cl salt on the atmospheric corrosion of Q450 weathering steel was explored in this work. Mass changes results showed UV illumination distinctly accelerated the atmospheric corrosion of Q450 weathering steel depositing with NH4Cl. The corrosion products with semi-conductor properties could improve the corrosion current and decrease the resistance of rusted samples when introducing light illumination during pre-Tafel test. Mott-Schottky analysis, photoinduced current density, and photoinduced opencircuit potential change illustrated that the electric conductivity of corrosion products played a big role in the accelerated corrosion process.
引用
收藏
页码：29 / 36
页数：8
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