Corrosion behavior of Q345 steel in a simulated industrial atmosphere
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K. Du
is an Associate Professor in the School of Materials Science and Engineering at Shenyang University of Technology. His research interests are focused on sheet metal forming theory and processing technology. He has presided over the National Natural Science Foundation of China, the Doctoral Start-up Foundation of Liaoning Province, and the Basic Scientific Research Project of the Education Department of Liaoning Province.
,
Z. Zhang
is an Associate Professor in the School of Materials Science and Engineering at Shenyang University of Technology. Her research interests are focused on serviceability and service life evaluation of metal materials.She has presided over the National Natural Youth Fund, the Doctoral Starting Fund of Liaoning Provincial Science and Technology Department, and the project of Liaoning Provincial Education Department.
Abstract
The corrosion process of Q345 steel in simulated industrial atmospheric surroundings using NaHSO3 as the corrosion medium was performed. Corrosion weight loss, X-ray diffraction (XRD), electron probe microanalysis (EPMA), laser scanning confocal microscopy (LSCM), and scanning electron microscopy (SEM) were utilized to investigate the corrosion behavior of Q345 steel samples at various corrosion times. The results indicate that, in the industrial atmospheric acceleration system, the corrosion law of Q345 steel follows an exponential function model and that as the corrosion period lengthens, the rate of corrosion declines steadily. γ-FeOOH, α-FeOOH, Fe3O4, Fe3O2, and FeO make up the majority of the corrosion products on the surface of rust layer, and the rust layer structure is generally loose in the first stages of corrosion. As the corrosion time lengthens, the corrosion products transform from needle-like to cluster-like and the rust layer will become thicker. In addition, there is a segregation of the elements Cr, S, and O in the rust layer of Q345 steel.
Kurzfassung
Q345-Stahl wurde mit NaHSO3 als Korrosionsmedium in simulierter industrieller atmosphärischer Umgebung korrodiert. Zur Untersuchung des Korrosionsverhaltens von Proben aus Q345-Stahl bei unterschiedlicher Korrosionsdauer wurde der durch Korrosion verursachte Gewichtsverlust gemessen sowie mit Röntgenbeugung (XRD), Elektronenstrahlmikroanalyse (ESMA), konfokaler Laserscanning-Mikroskopie (LSCM) und Rasterelektronenmikroskopie (REM) gearbeitet. Die Ergebnisse zeigen, dass das Korrosionsgesetz von Q345-Stahl im Beschleunigungssystem der Industrieatmosphäre einem Modell mit Exponentialfunktion folgt und die Korrosionsgeschwindigkeit mit fortschreitender Korrosionsdauer kontinuierlich abnimmt. γ-FeOOH, α-FeOOH, Fe3O4, Fe3O2 und FeO bilden den Großteil der Korrosionsprodukte auf der Oberfläche der Rostschicht. In der Regel bildet die Rostschicht in der ersten Phase eine lose Struktur aus. Mit zunehmender Korrosionsdauer wird die Rostschicht dicker und die Korrosionsprodukte verändern ihre Erscheinung von nadelartig hin zu clusterartig. In der Rostschicht von Q345-Stahl kommt es darüber hinaus zur Segregation der Elemente Cr, S, und O.
About the authors
is an Associate Professor in the School of Materials Science and Engineering at Shenyang University of Technology. His research interests are focused on sheet metal forming theory and processing technology. He has presided over the National Natural Science Foundation of China, the Doctoral Start-up Foundation of Liaoning Province, and the Basic Scientific Research Project of the Education Department of Liaoning Province.
is an Associate Professor in the School of Materials Science and Engineering at Shenyang University of Technology. Her research interests are focused on serviceability and service life evaluation of metal materials.She has presided over the National Natural Youth Fund, the Doctoral Starting Fund of Liaoning Provincial Science and Technology Department, and the project of Liaoning Provincial Education Department.
5 Acknowledgments
All the works were funded by the National Natural Science Foundation of China (Grant No. 52305396), the Natural Science Foundation Funding Program of Liaoning Province(Grant No. 2023-MSLH-265), and the Basic Scientific Research Project of the Education Department of Liaoning Province (Grant No. JYTMS20231201).
5 Danksagung
Alle Arbeiten wurden von der National Natural Science Foundation of China (Förderkennzeichen 52305396), dem Natural Science Foundation Förderungsprogramm der Provinz Liaoning (Förderkennzeichen 2023-MSLH-265), und dem wissenschaftlichen Grundlagenforschungsprojekts des Bildungsministeriums der Provinz Liaoning (Förderkennzeichen JYTMS20231201) finanziert.
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Articles in the same Issue
- Meeting Diary
- Frontmatter
- Editorial
- Editorial
- Microstructural characterization of 15Cr steel after quenching and slow cooling rates
- Corrosion behavior of Q345 steel in a simulated industrial atmosphere
- Failure Analysis
- Risk assessment of hitch pins connecting tractor and trailer to enhance the safety of humans using strain life fatigue approach
- Picture of the Month
- Picture of the Month
- News
- News
- Meeting Diary
- Meeting Diary
