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首页> 外文期刊>The Journal of Supercritical Fluids >Assessing the corrosion product scale formation characteristics of X80 steel in supercritical CO2-H(2)o binary systems with flue gas and NaCl impurities relevant to CCUS technology
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Assessing the corrosion product scale formation characteristics of X80 steel in supercritical CO2-H(2)o binary systems with flue gas and NaCl impurities relevant to CCUS technology

机译：用烟气和CCUS技术的烟道气和NaCl杂质评估超临界CO2-H（2）O二元系统X80钢的腐蚀产品刻度形成特性

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摘要

The corrosion product scale formation mechanism of X80 steel in the supercritical (SC) CO2-H2O binary phase containing flue gases and NaCl impurities at 8 MPa and 60 degrees C was investigated. The formation process of corrosion product scale was significantly different in the SC CO2-saturated aqueous and water-saturated SC CO2 phases. In the SC CO2-saturated aqueous phase, an amorphous product scale was formed initially, then a crystalline product scale was precipitated. The formation process of the corrosion product scale in the saturated water SC CO2 phase proceeded in just the opposite way. In the water-saturated SC CO2 phase, the inner scale had better protectiveness to the substrate than the outer scale, but it was just the opposite in the SC CO2-saturated aqueous phase. The severity of pitting in the SC CO2-saturated aqueous phase was much greater than the pitting corrosion in the water-saturated SC CO2 phase.
机译：研究了含有烟道气和NaCl杂质在8MPa和60℃下的超临界（SC）CO2-H2O二元相的X80钢的腐蚀产品刻度形成机理。 SC CO 2饱和水和水饱和SC CO 2相阶段的腐蚀产品刻度的形成过程显着差异。 在SC CO 2饱和水相中，最初形成无定形产品量表，然后沉淀结晶产品量表。 饱和水SC CO2在饱和水SC CO2中的腐蚀产品刻度的形成过程以相反的方式进行。 在水饱和SC CO2相中，内尺度与外刻度具有更好的保护性，但在SC CO 2饱和水相中是相对的。 在SC CO 2饱和水相中的点蚀的严重程度远大于水饱和SC CO2相中的蚀腐蚀。

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