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金属学报  2008 

新型低碳贝氏体钢在含氯离子环境中的腐蚀行为和表观力学性能的变化

, PP. 1116-1124

Keywords: 低碳贝氏体钢,含氯离子的环境,耐腐蚀性能

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Abstract:

利用周浸加速腐蚀实验与力学性能实验对比研究了新型低碳贝氏体钢、超低碳铁素体钢以及09CuPCrNi钢这3种钢在含氯离子环境中的耐腐蚀性能与拉伸性能的变化.与超低碳铁素体钢和09CuPCrNi钢相比,新型低碳贝氏体钢不仅力学性能提高了,而且耐腐蚀性能亦得到改善,其腐蚀速率明显低于其余2种对比钢,并且随着腐蚀时间的延长其优势更加明显.3种钢的锈层具有相近的相组成,但新型低碳贝氏体钢的腐蚀产物颗粒最细小且锈层最致密,同时在接近钢基体的锈层处Cr和Cu的富集程度最明显且Cl的含量最低.新型低碳贝氏体钢锈层阻碍氯离子透过能力高于其余2种对比钢锈层.

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