Protectiveness, morphology and composition of corrosion products formed on carbon steel in the presence of Cl-, Ca2+ and Mg2+ in high pressure CO2 environments
Protectiveness, morphology and composition of corrosion products formed on carbon steel in the presence of Cl-, Ca2+ and Mg2+ in high pressure CO2 environments
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DOI：
10.1016/j.apsusc.2018.05.140
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发表时间：
2018-10-15
影响因子：
6.7
通讯作者：
Neville, Anne
中科院分区：
文献类型：
--
作者：
Hua, Yong;Shamsa, Amir;Neville, Anne
本研究调查了氯离子（Cl-）、钙离子（Ca2+）和镁离子（Mg2+）对碳钢在模拟二氧化碳地质储存环境（60摄氏度和100巴二氧化碳）中二氧化碳腐蚀行为的个别影响。在6至96小时的浸泡时间内评估上述离子的影响。在此期间监测腐蚀产物的生长情况，并将其与整体和局部腐蚀的程度联系起来。对于每个测试，腐蚀产物的形貌和化学成分都使用扫描电子显微镜（SEM）、聚焦离子束（FIB）方法、能量色散x射线光谱（EDX）和x射线衍射（XRD）相结合的方法进行分析。
This study investigates the individual effects of chloride (Cl-), calcium (Ca2+), and magnesium (Mg2+) ions on the CO2 corrosion behaviour of carbon steel in simulated CO2 geologic storage environments (60 degrees C and 100 bar CO2). The influence of the aforementioned ions was assessed over immersion times from 6 to 96 h. The corrosion product growth was monitored over this period and related to the extent of both general and localised corrosion. For each test, corrosion product morphology and chemistry were analysed using a combination of scanning electron microscopy (SEM), focused ion beam (FIB) method, energy-dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD).