Ex‐situ synchrotron X‐ray diffraction study of CO₂ corrosion‐induced surface scales developed in low‐alloy steel with different initial microstructure

Summary, in English

The CO₂ corrosion-induced scale developed in the surface region of the low-grade carbon steel is thoroughly investigated to understand the corrosion mechanisms involved during exposure to CO₂-saturated aqueous environments. In this work, in addition to the electron microscopy and lab-source X-ray diffraction (XRD) methods, ex-situ depth-resolved phase identification of the corrosion scales developed on steel with different initial microstructures is performed using synchrotron grazing incidence XRD at different incidence angles. The CO₂ corrosion mechanism is discussed considering the observed distribution of the corrosion products formed at a different depth relative to the time of electrochemical exposure of the steels.

• Author: Saber Haratian; Kapil Kumar Gupta; Alfred Larsson; Giuseppe Abbondanza; Emad Hasan Bartawi; Francesco Carlà; Edvin Lundgren; Rajan Ambat
• Department/s: LU Profile Area: Light and Materials; LTH Profile Area: Nanoscience and Semiconductor Technology; Synchrotron Radiation Research; NanoLund: Centre for Nanoscience; LTH Profile Area: Photon Science and Technology
• Publishing year: 2023
• Language: English
• Publication/Series: Corrosion Science
• Volume: 222
• Links: http://dx.doi.org/10.1016/j.corsci.2023.111387
• Document type: Journal article
• Publisher: Elsevier
• Topic: Materials Chemistry
• Keywords: CO corrosion; Depth-resolved phase identification; Grazing incidence X-ray diffraction; Scaling
• Status: Published
• ISBN/ISSN/Other: ISSN: 0010-938X