二维同步加速器SAXS-WAXS对早期CO2腐蚀垢的原位研究

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-08-23 DOI:10.1016/j.corsci.2025.113267

M. Hassan Sk , S.M. Clarke , M. Woolley , A. Osudare , S. Agrawal , N. Sharifi , D. Eberl-Craske , R. Lindsay , M.T.L. Casford , A. Smith , N. Terrill

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引用次数: 0

摘要

在本研究中，我们在工业相关条件下（CO2饱和盐水，超低氧（8-32 ppb）， 80 °C, pH 6.8，开路电位（OCP）），使用同步加速器散射原位研究了“sweet”CO2腐蚀垢的成核机制。同时进行小角度和广角x射线散射（SAXS-WAXS）测量，可以将成核腐蚀垢的相和状态表征为浸入时间和金属/溶液界面位置的函数。结果表明，在形成碳酸铁结晶层之前，形成了前驱体非晶相。

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In situ early-stage CO2 corrosion scale study with 2D synchrotron SAXS-WAXS

In this study we have investigated the nucleation mechanism of ‘sweet’, CO₂ corrosion scale in situ using synchrotron scattering under industrially relevant conditions (CO₂ saturated brine, ultra-low oxygen (8–32 ppb), 80 °C, pH 6.8, open-circuit-potential (OCP)). Simultaneous small and wide-angle X-Ray Scattering (SAXS-WAXS) measurement allows the phase and state of the nucleating corrosion scale to be characterised as a function of both immersion time and location with respect to the metal/solution interface. The results indicate that a precursor amorphous phase is formed prior to the emergence of a crystalline iron carbonate scale.

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.