The effect of chromium on the corrosion behavior of low Cr-bearing alloy steel in a wet gas pipeline with a high flow rate was studied using a rotating cylinder electrode (RCE) and self-built wet gas flow loop device. The results show that the addition of chromium in the steel can increase the flow accelerated corrosion (FAC) resistance of steel effectively. It was hard for pure FeCO₃ to deposit onto the carbon steel surface to form an intact corrosion film when the flow rate or wall shear stress was high. However, a mixture of Cr(OH)₃ and FeCO₃ can still be deposited onto the 3Cr steel surface and form an intact and protective corrosion film even under conditions with a 212 Pa wall shear stress in the wet gas pipeline.

中文翻译：

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铬对超高流速下低铬合金钢腐蚀行为的影响

采用旋转圆柱电极（RCE）和自建的湿气流量回路装置，研究了铬对低Cr合金钢在大流量湿气管道中腐蚀行为的影响。结果表明，在钢中添加铬可以有效提高钢的抗流动加速腐蚀（FAC）性能。当流速或壁面剪切应力较高时，纯FeCO ₃很难沉积在碳钢表面形成完整的腐蚀膜。然而，Cr(OH) ₃和 FeCO ₃的混合物仍然可以沉积在 3Cr 钢表面并形成完整的保护性腐蚀膜，即使在湿气管道中具有 212 Pa 壁面剪切应力的条件下。