用动电位扫描法和交流阻抗法研究X70钢在饱和CO2的HAc-NaAc溶液中的腐蚀行为。结果表明：酸性溶液中存在CO2时，使得溶液中H+浓度增大，同时还有可还原的H2CO3、HCO3-，可加快X70钢的腐蚀。X70钢在HAc-NaAc溶液中活性溶解时生成的中间产物Fe(OH)ads，在饱和CO2的HAc-NaAc溶液中，活性溶解时生成的中间产物仍为Fe（OH）ads。
The corrosive behavior of X70 steel in acid solution at various pH and saturated with N2 or saturated with CO2 was studied by means of Potentiondynamic polarization measurements and EIS.The result showed that the concentration of H+ in solution increase ,at the same time the reduction of H2CO3 and HCO3- could be the additive cathodic reaction,which accelerated the reaction of X70 steel.The adsorption intermediate product was Fe(OH)ads in process of the corrosion reaction of X70 steel in HAc-NaAc solution.
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