| 新型低碳高强耐磨铸钢NMZ1在模拟海水中的腐蚀形貌 |
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| 引用本文： | 曹晶晶,马爱斌,王秋月,江静华,陈建清,周祺. 新型低碳高强耐磨铸钢NMZ1在模拟海水中的腐蚀形貌[J]. 腐蚀与防护, 2011, 0(1) |
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| 作者姓名： | 曹晶晶 马爱斌 王秋月 江静华 陈建清 周祺 |
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| 作者单位： | 河海大学水资源高效利用与工程安全国家工程研究中心;河海大学力学与材料学院; |
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| 基金项目： | 国家“十一五”科技支撑计划重大项目(No.2006BAA01A24-3) |
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| 摘 要： | 借助全浸泡试验和腐蚀表面形貌观察,研究了新型低碳、高硅海洋用钢NMZ1在模拟静态海水中的腐蚀行为,并以常用离心泵叶轮材料20Cr5Cu及泥浆输送管道材料Q345为对比,评价其耐蚀性。结果表明,NMZ1钢的耐海水腐蚀性能优于Q345而不及20Cr5Cu,其在3.5%NaCl中的腐蚀速率为0.1215mm/a,约为Q345的2/3和20Cr5Cu的1.5倍;其合金化元素有助于提高表面产物膜的保护性并抑制点蚀发生,故其表现出均匀腐蚀形态且腐蚀速率较低。
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| 关 键 词： | 耐蚀性 耐磨铸钢 浸泡试验 点蚀 |
Corrosion Resistance of a New Low-carbon High-strength Wear-resistant Cast Steel NMZ1 |
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| CAO Jing-jing,MA Ai-bin. Corrosion Resistance of a New Low-carbon High-strength Wear-resistant Cast Steel NMZ1[J]. Corrosion & Protection, 2011, 0(1) |
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| Authors: | CAO Jing-jing MA Ai-bin |
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| Affiliation: | CAO Jing-jing~(1,2),MA Ai-bin~(1,WANG Qiu-yue~2,JIANG Jing-hua~(1,CHEN Jian-qing~2,ZHOU Qi~2 (1.National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety,Hohai University,Nanjing 210098,China,2.School of Mechanics and Materials,China) |
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| Abstract: | The corrosion behavior of a new wear-resistant cast marine steel NMZl with low carbon and high silicon was investigated in simulated sea-water by means of immersion test and corrosion-surface-morphology observation. The corrosion resistance had been evaluated by comparing the weight-loss with that of 20Cr5Cu for centrifugal pump impeller and Q345 for slurry pipeline.The results showed that sea-water corrosion resistance of NMZl was superior to that of Q345 but inferior to that of 20Cr5Cu.The corrosion rate ... |
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| Keywords: | corrosion resistance wear-resistance cast steel immersion test pitting |
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