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本文研究了大气中典型的腐蚀介质SO_4~(2-)、c1、SO_3~(2-)对Cor-tenB、16Mn大气腐蚀的加速作用,结果表明,在所有介质条件下 Cor-tenB 的耐蚀性均优于16Mn,这与Cor-tenB 中 Cu 元素有很大关系,此外,不同的锈层结构和层次分布特征是导致两种材料的强度和寿命出现差别的另一主要原因。Cor-tenB 具有致密的内层锈层结构,具有较好的防护性能;16Mn的内层锈层结构疏松,可以有较高的蓄水量,较致密的外层又有利于溶液在内层的滞留,从而有利于腐蚀的进行。
In this paper, the accelerating effects of SO_4 ~ (2 -), c1, SO_3 ~ (2-) on Cor-tenB and 16Mn atmospheric corrosion are studied. The results show that corrosion resistance of Cor-tenB under all media conditions Which is better than 16Mn, which is closely related to the Cu element in Cor-tenB. In addition, the structure and distribution of different rust layers are the other main causes of the difference between the strength and life of the two materials. Cor-tenB has a dense inner rust layer structure, with good protection performance; 16Mn inner rust layer structure loose, can have a high water storage capacity, more dense outer layer is also conducive to the solution in the inner Stranded, which is conducive to the progress of corrosion.