Corrosion behaviour of X65 carbon steel in supercritical-CO2 containing H2O and O-2 in carbon capture and storage (CCS) technology
Corrosion behaviour of X65 carbon steel in supercritical-CO2 containing H2O and O-2 in carbon capture and storage (CCS) technology
复制标题
碳捕集与封存（CCS）技术中 X65 碳钢在含有 H2O 和 O-2 的超临界 CO2 中的腐蚀行为
DOI：
10.1016/j.corsci.2017.01.028
复制
发表时间：
2017
影响因子：
8.3
通讯作者：
Zhang G. A.
中科院分区：
文献类型：
--
作者：
Tang Y.;Guo X. P.;Zhang G. A.
采用失重法、电化学测试和表面分析等方法研究了X65碳钢在含H2O和O2的超临界CO2（SC-CO2）中的腐蚀行为。建立了一种以Ag/AgCl参比电极为参比电极的饱和H_2O超临界CO_2相的电化学原位测量装置。结果表明，SC-CO2环境与非SC-CO2环境的电化学腐蚀机理没有本质区别。少量O2的存在抑制了保护性FeCO 3膜的形成，促进了非保护性Fe氧化物的形成，导致SC-CO2相腐蚀速率明显增加。
Corrosion behaviour of X65 carbon steel in supercritical-CO2(SC-CO2) containing H2O and O2was studied by weight loss test, electrochemical measurements, and surface analysis. A setup was developed forin situelectrochemical measurements in H2O-saturated SC-CO2phase by using Ag/AgCl reference electrode. It is demonstrated that there is no essential difference in the electrochemical corrosion mechanism between SC-CO2and non-SC-CO2environments. The presence of small amount of O2inhibits the formation of protective FeCO3film and promotes the formation of non-protective Fe oxide, which leads to obvious increase of corrosion rate in SC-CO2phase.