| HSn70-1船用冷凝管腐蚀穿孔失效分析 |
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| 引用本文： | 蒋长乐,崔文源,韦绍林. HSn70-1船用冷凝管腐蚀穿孔失效分析[J]. 腐蚀与防护, 2011, 0(1) |
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| 作者姓名： | 蒋长乐 崔文源 韦绍林 |
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| 作者单位： | 中铝洛阳铜业有限公司;中南大学材料科学与工程学院; |
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| 摘 要： | 某船用HSn70-1冷凝管使用过程中出现腐蚀穿孔。通过化学成分、金相组织和能谱分析以及扫描电镜等方法对失效样品进行了分析。结果表明,介质中的Cl~-引起管内壁局部点蚀,加上冲刷腐蚀、脱锌腐蚀、晶间腐蚀的交互作用,引起腐蚀加速,最终导致穿孔。提出了预防或延缓腐蚀穿孔的措施。
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| 关 键 词： | HSn70-1 腐蚀穿孔 失效分析 冲刷腐蚀 脱锌腐蚀 晶间腐蚀 |
Failure Analysis of Corrosion Perforation of HSn70-1 Brass Tube Used for Ship |
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| JIANG Chang-le,CUI Wen-yuan,WEI Shao-li. Failure Analysis of Corrosion Perforation of HSn70-1 Brass Tube Used for Ship[J]. Corrosion & Protection, 2011, 0(1) |
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| Authors: | JIANG Chang-le CUI Wen-yuan WEI Shao-li |
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| Affiliation: | JIANG Chang-le~1,CUI Wen-yuan~2,WEI Shao-li~1 (1.CHINALCO Luoyang Copper Co.,Ltd.,Luoyang 471039,China,2.Central South University,Changsha 410012,China) |
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| Abstract: | Corrosion perforation occurred on HSn70-1 brass tubes used for ship.The failure samples were analyzed by means of chemical composition analysis,metallographic observation,energy spectroscopy analysis and scanning electron microscopy(SEM).The results showed that the pitting corrosion caused by Cl~- was the major reason for corrosion perforation,combined with the interaction of erosion-corrosion,dezincification corrosion and intergranular corrosion,resulting in accelerated corrosion and finally leading to cor... |
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| Keywords: | HSn70-1 corrosion perforation failure analysis erosion-corrosion dezincification corrosion intergranular corrosion |
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