【摘要】 参照正交试验的思路,利用电化学测试手段研究了在CO₂环境中"拉应力-温度-Cl^-含量"共存体系对P110钢电化学行为的影响。结果表明:在饱和CO₂环境中,共存体系各因素对P110钢电化学行为的影响强弱顺序为温度>Cl^-含量>拉应力;共存体系中,升高温度、增大Cl^-含量以及在弹性变形阶段增大拉应力都能使P110钢的电化学反应速率增大,促进P110钢CO₂腐蚀反应的进行。更多还原

【Abstract】 Referring to the idea of orthogonal test, the effect of “tensile stress-temperature-Cl^- concentration” coexistence system on electrochemical behavior of P110 steel in CO₂ environment was investigated using electrochemical measurement. The results show that in saturated CO₂ environment, the influence order of factors in the coexisting system on the electrochemical behavior of P110 steel was as follows: temperature > Cl^- concentration > tensile stress. The electrochemical reaction rate of P110 steel would be increased by increasing temperature, Cl^- concentration and tensile stress（below yield strength） in the coexistence system, which would promote the CO₂ corrosion reaction of P110 steel.更多还原