Contrast inversion of ferrite and pearlite in a sweet corrosion environment

被引:1
|
作者
Sk, M. Hassan [1 ,2 ]
Agrawal, S. [1 ]
Casford, M. T. L. [1 ]
Clarke, S. M. [1 ,2 ]
机构
[1] Univ Cambridge, Yusuf Hamied Dept Chem, Lensfield Rd, Cambridge CB2 1EW, England
[2] Univ Cambridge, Inst Energy & Environm Flows, Cambridge CB3 0EZ, England
基金
英国工程与自然科学研究理事会;
关键词
Sweet; CO2; corrosion; Microstructural effect; In-situ microscopic technique; Confocal Raman; X-RAY-DIFFRACTION; CO2; CORROSION; CARBON-STEEL; SCALE FORMATION; MILD-STEEL; MICROSTRUCTURE; BRINE; FLOW; PROTECTIVENESS; CR/MO;
D O I
10.1016/j.apsusc.2023.157744
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In-situ optical imaging in a confocal Raman system of a pipeline steel under sweet corrosion environmental conditions typical of a commercial environment (NaCl brine, pH 6.8, temp, 80 degrees C, low oxygen, open circuit potential) revealed contrast inversion of ferrite and pearlite microdomains as compared to their 3% Nital etched counterpart. This behaviour is in excellent agreement with the time resolved mineralogy growth profile obtained from in-situ confocal Raman and also complemented by AFM and SEM analysis of the surface roughness and corresponding morphology. The data presented here provides new insight into the process of sweet corrosion scaling in a ferritic-pearlitic microstructure steel.
引用
收藏
页数:11
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