Production of oil and gas results in the creation of carbon dioxide (CO₂) which when wet is extremely corrosive owing to the speciation of carbonic acid. Severe production losses and safety incidents occur when carbon steel (CS) is used as a pipeline material if corrosion is not properly managed. Currently corrosion inhibitor (CI) chemicals are used to ensure that the material degradation rates are properly controlled; this imposes operational constraints, costs of deployment and environmental issues. In specific conditions, a naturally growing corrosion product known as siderite or iron carbonate (FeCO₃) precipitates onto the internal pipe wall providing protection from electrochemical degradation. Many parameters influence the thermodynamics of FeCO₃ precipitation which is generally favoured at high values of temperatures, pressure and pH. In this paper, a new approach for corrosion management is presented; micro-modifying the corrosion product. This novel mitigation approach relies on enhancing the crystallisation of FeCO₃ and improving its density, protectiveness and mechanical properties. The addition of a silicon-rich nanofiller is shown to augment the growth of FeCO₃ at lower pH and temperature without affecting the bulk pH. The hybrid FeCO₃ exhibits superior general and localised corrosion properties. The findings herein indicate that it is possible to locally alter the environment in the vicinity of the corroding steel in order to grow a dense and therefore protective FeCO₃ film via the incorporation of hybrid organic-inorganic silsesquioxane moieties. The durability and mechanical integrity of the film is also significantly improved.

石油和天然气的生产会导致产生二氧化碳（CO ₂），由于碳酸的形成，二氧化碳在潮湿时极具腐蚀性。如果腐蚀管理不当，将碳钢（CS）用作管道材料时会发生严重的生产损失和安全事故。当前，使用腐蚀抑制剂（CI）化学品来确保适当控制材料的降解速率。这施加了操作约束，部署成本和环境问题。在特定条件下，被称为菱铁矿或碳酸铁（FeCO ₃）的自然增长的腐蚀产物会沉淀在管道内壁上，从而防止电化学降解。许多参数影响FeCO ₃的热力学通常在较高的温度，压力和pH值下有利于沉淀。本文提出了一种新的腐蚀管理方法。微修改腐蚀产物。这种新颖的缓解方法依赖于增强FeCO ₃的结晶并改善其密度，保护性和机械性能。富含硅的纳米填料的添加显示出可以在较低的pH和温度下增加FeCO ₃的生长，而不会影响整体pH。FeCO ₃杂化物表现出优异的一般腐蚀和局部腐蚀性能。本文的发现表明，可以局部改变腐蚀钢附近的环境，以生长致密的保护性FeCO _3。通过掺入杂化的有机-无机倍半硅氧烷部分形成薄膜。膜的耐久性和机械完整性也得到显着改善。