Some new discoveries on the structure of the rust layer of weathering steel in a simulated industrial atmosphere by STEM-EDS and HRTEM

2021 ◽  
Vol 183 ◽  
pp. 109322
Author(s):  
Yuefeng Wang ◽  
Jianguang Li ◽  
Qingfeng Wang ◽  
Tiansheng Wang
Keyword(s):  
Weathering Steel ◽  
Rust Layer ◽  
Industrial Atmosphere

Corrosion Behavior of New Weathering Steel in the Environment Simulating Coastal Industrial Atmosphere

2012 ◽  
Vol 479-481 ◽  
pp. 322-326
Author(s):  
Wen Fang Cui ◽  
Chang Jing Shao ◽  
Chun Ming Liu
Keyword(s):  
Corrosion Behavior ◽  
Electrochemical Impedance ◽  
Stable Phase ◽  
Weathering Steel ◽  
Uniform Corrosion ◽  
Bainitic Steel ◽  
Low Carbon ◽  
Rust Layer ◽  
Electrochemical Impedance Spectra ◽  
Industrial Atmosphere

The corrosion behavior of low carbon bainitic steel with Cu-P alloying in the environment simulating coastal industrial atmosphere was investigated by using dry-wet cycling corrosion test. 09CuPCrNi steel and low carbon bainitic steel without Cu-P alloying were used as comparative steels. The corrosion kinetics and electrochemical impedance spectra of the steels were measured, respectively. The morphologies of rust layers were observed by SEM and the phase constitutes of the rust layers were analyzed by XRD. Low carbon bainitic steel with Cu-P alloying behaves the lowest corrosion rate and the highest resistance of rust layer. Bainite microstructure is responsible for the uniform corrosion and the formation of dense rust layer. Cu-P alloying accelerates the transformation of gamma-FeOOH and Fe3O4 to thermodynamic stable phase alpha-FeOOH, which improves the protective effect of the rust layer.

scholarly journals Investigation of Rust Layer Formed on Weathering Steel Coated with a Surface Treatment Promoting Protective Rust Formation

2007 ◽  
Vol 56 (11) ◽  
pp. 1035-1041 ◽  
Author(s):  
Takayuki KAMIMURA ◽  
Takashi DOI ◽  
Kazuyuki KASHIMA ◽  
Norio WAGURE ◽  
Shuichi HARA ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Weathering Steel ◽  
Rust Layer

Accelerated corrosion behavior of weathering steel Q345qDNH for bridge in industrial atmosphere

2021 ◽  
Vol 306 ◽  
pp. 124864
Author(s):  
Jun-dong Fu ◽  
Shui Wan ◽  
Ying Yang ◽  
Qiang Su ◽  
Wen-wen Han ◽  
...  
Keyword(s):  
Corrosion Behavior ◽  
Weathering Steel ◽  
Accelerated Corrosion ◽  
Industrial Atmosphere

Influence of a CuS04 Treatment on Atmospheric Steel Rust Formation a Mössbauer Spectroscopy Study

CORROSION ◽  
1982 ◽  
Vol 38 (4) ◽  
pp. 206-211 ◽  
Author(s):  
C. Saragovi-Badler ◽  
I. A. Maier ◽  
F. Labenski
Keyword(s):  
Copper Deposit ◽  
Steel Plates ◽  
Weathering Steel ◽  
Spectroscopy Study ◽  
Spectroscopy Analysis ◽  
Amorphous Substance ◽  
Significant Difference ◽  
Amorphous Compound ◽  
Industrial Atmosphere

Abstract Mössbauer spectroscopy has been used to analyze the rust layers formed on a weathering steel and a 1010 steel exposed for 10-1/2 months to an urban-industrial atmosphere. No significant difference was found comparing the rusts of both steels: they were composed by γ-FeOOH, superparamagnetic α-FeOOH, and an amorphous or gel-like compound. γ-FeOOH is more abundant in the internal rust layers, whereas the amount of α-FeOOH and the amorphous compound increase in the external rusts. Part of the samples received an initial copper deposit by immersion of the steel plates in a CuSO4 bath. Mössbauer spectroscopy analysis showed that the amorphous substance was no longer present in the rusts of those specimens; that is, the rusts of both steels were formed only by γ-FeOOH and α-FeOOH.

Effect of Ni Alloying on the Corrosion Resistance of 355MPa High Weather-Resistant Steel

2015 ◽  
Vol 816 ◽  
pp. 781-787
Author(s):  
Z.R. Hou ◽  
H.L. Yi ◽  
X.M. Zhao
Keyword(s):  
Corrosion Resistance ◽  
Weathering Steel ◽  
Resistant Steel ◽  
Rust Layer ◽  
Corrosion Tests ◽  
Ni Content

Based on the 355MPa high weather-resistant steel, three different kinds of high weather-resistant steels were designed by varying the content of Ni. The the corrosion resistance of the high weather-resistant steel as well as the influence of Ni content on the corrosion resistance were studied in the present investigation. The results of the cycle corrosion tests indicated that with the addition of Ni, the corrosion resistance was improved to some extent. The rust layer of the weathering steel was composed of α-FeOOH and γ-FeOOH at the beginning of corrosion, and the α-FeOOH turned to γ-FeOOH which enhanced the corrosion resistance.

The long term growth of the protective rust layer formed on weathering steel by atmospheric corrosion during a quarter of a century

1994 ◽  
Vol 36 (2) ◽  
pp. 283-299 ◽  
Author(s):  
M. Yamashita ◽  
H. Miyuki ◽  
Y. Matsuda ◽  
H. Nagano ◽  
T. Misawa
Keyword(s):  
Atmospheric Corrosion ◽  
Weathering Steel ◽  
Rust Layer

Effect of Sn on the corrosion behavior of weathering steel in a simulated tropical marine atmosphere

2020 ◽  
Vol 67 (2) ◽  
pp. 129-139
Author(s):  
Cheng Jiang ◽  
Ying Yang ◽  
Xuequn Cheng ◽  
Jinbin Zhao ◽  
Xiaogang Li
Keyword(s):  
Real Time ◽  
Corrosion Behavior ◽  
Weathering Steel ◽  
Marine Atmosphere ◽  
Rust Layer ◽  
Monitoring Technology ◽  
Content Type ◽  
X Ray ◽  
Tropical Marine Atmosphere ◽  
Current Monitoring

Purpose This study aims to study the effect of Sn on the corrosion behavior of weathering steel (WS) in a simulated tropical marine atmosphere. Design/methodology/approach Indoor alternate immersion tests, electrochemical measurements and real-time current-monitoring technology based on the galvanic corrosion principle were used and the scanning electron microscope, X-ray diffraction, X-ray photoelectron spectroscopy and electron probe microanalyzer were used to analyze the morphology and component of the rust layer. Findings The results indicated that Sn has a positive influence on the corrosion process. Sn participated in the composition of the rust layer in the form of SnO2 and is enriched in the inner rust layer. SnO2 participated in the coprecipitation process with iron oxides and oxyhydroxides, which promoted further transformation of γ-FeOOH to α-FeOOH. As a result, the rust layer of Sn-containing steel was continuous, compact and effectively blocked the invasion of aggressive Cl−. Therefore, the additive of Sn enhanced the corrosion resistance of WS in a simulated tropical marine atmosphere. Originality/value The corrosion behaviors of WS were researched by the real-time current-monitoring technology which was rarely used.

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