Investigation of microstructure and corrosion behavior of weathering steel in aqueous solution containing different anions for simulating service environments
Investigation of microstructure and corrosion behavior of weathering steel in aqueous solution containing different anions for simulating service environments
复制标题
模拟使用环境的不同阴离子水溶液中耐候钢的微观结构和腐蚀行为研究
DOI：
10.1016/j.corsci.2020.108686
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发表时间：
2020-07-01
影响因子：
8.3
通讯作者：
Cao, Fahe
中科院分区：
文献类型：
--
作者：
Liu, Pan;Hu, Lulu;Cao, Fahe
研究了耐候钢在三种溶液(S1：3.5wt.%NaC l，S2：3.5wt.%NaC l+0.052 wt.%NaHSO3，S3：3.5wt.%NaC l+0.907 wt.%NaHCO3)中的组织和腐蚀行为。高比例的随机边界是造成强烈腐蚀敏感性的原因。锈层厚度随浸泡时间的延长而增加，大小顺序为S1>；S3>；S2。在S1和S2溶液中形成的铁锈主要由γ-FeOOH相组成，但后者的保护性较差。在S1溶液中形成的铁锈密度大、厚度大，其防护效果与S3溶液相似。
The microstructure and corrosion behavior of weathering steel in three solutions (S1: 3.5 wt.% NaCl, S2: 3.5 wt. % NaCl+0.052 wt.% NaHSO3, S3: 3.5 wt.% NaCl+0.907 wt.% NaHCO3) were investigated. A high proportion of random boundaries is responsible for strong corrosion sensitivity. The thickness of rust increases with immersion time and is in the order of S1>S3>S2. The rust formed in S1 and S2 solutions mainly consists of gamma-FeOOH phase, but the latter is less protective. The rust formed in S1 solution is dense and thick resulting in its protection being similar to that in S3 solution.