The corrosion of alloy steels with different amounts of Cr was studied using electrochemical tests, wet–dry cycle corrosion, X-ray diffraction, and Kelvin probe force microscopy. The results show that the content of Cr is positively correlated with the corrosion resistance of bare steel, but the corrosion resistance of atmospheric corrosion does not show the same pattern. The atmospheric corrosion resistance of Cr-containing steel exhibits three different stages with the change of Cr element content. When the Cr content is in the range of 1–4%, the corrosion rate is high and does not change within the Cr content. As the Cr content was further increased from 4 to 7%, the corrosion rate exhibited a linear decrease and then drops rapidly when the Cr content reaches 8%. These three different corrosion rate stages are related to the influence of Cr content on Fe₃O₄ content in the rust layer.

使用电化学测试，干湿循环腐蚀，X射线衍射和开尔文探针力显微镜研究了含不同量铬的合金钢的腐蚀。结果表明，Cr的含量与裸钢的耐蚀性呈正相关，而大气腐蚀的耐蚀性没有相同的规律。随着Cr元素含量的变化，含Cr钢的耐大气腐蚀性能表现出三个不同的阶段。当Cr含量在1-4％范围内时，腐蚀速率很高，并且在Cr含量范围内不会发生变化。随着Cr含量进一步从4增加到7％，腐蚀速率呈线性下降，然后在Cr含量达到8％时迅速下降。防锈层中₃ O _4的含量。