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利用自制高温、高压腐蚀试验及电化学测试试验装置，用失重法、电化学极化曲线、扫描电镜及Ｘ射线衍射分析，研究了碳钢在ＣＯ＿２饱和的３％ＮａＣｌ溶液中ＣＯ＿２分压、温度对碳钢腐蚀的影响，结果表明，在较低温度（７０℃）时，碳钢腐蚀速率对数与ＣＯ＿２分压对数成线性关系，与ＤｅＷａａｒｄ等人的研究结果相符；７０℃时，腐蚀产物的附着力及耐蚀性很差，此时增大ＣＯ＿２分压加速腐蚀反应的阴极过程；１１０℃时碳钢腐蚀产物为致密的碳酸亚铁膜，此膜对金属基体的附着力较强、保护性好，温度对ＣＯ＿２腐蚀产物有明显的影响。文中还探讨了缓蚀剂抑制ＣＯ＿２腐蚀。
The self-made high temperature and high pressure corrosion test and electrochemical test equipment were used to study the carbon dioxide partial pressure, temperature and temperature in carbon steel saturated 3% NaCl solution by weight loss method, electrochemical polarization curve, scanning electron microscopy and X-ray diffraction analysis. The results show that the logarithm of the corrosion rate of carbon steel is logarithmically proportional to the logarithm of partial pressure of CO_2 at low temperature (70 ℃), which is in good agreement with DeWaard et al’s study. At 70 ℃, corrosion The product of the adhesion and corrosion resistance is poor, then increase the partial pressure of CO 2 to accelerate the corrosion reaction of the cathode process; 110 ℃ carbon steel corrosion products dense ferrocene film, the film adhesion to the metal matrix stronger , Good protection, temperature CO 2 corrosion products have a significant impact. The paper also discusses the corrosion inhibitor inhibits CO 2 corrosion.