| 化学镀镍换热器管束腐蚀破裂失效分析 |
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| 引用本文： | 师红旗,丁毅,马立群.化学镀镍换热器管束腐蚀破裂失效分析[J].表面技术,2009,38(5):93-95. |
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| 作者姓名： | 师红旗 丁毅 马立群 |
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| 作者单位： | 南京工业大学材料科学与工程学院,江苏,南京,210009;南京工业大学材料科学与工程学院,江苏,南京,210009;南京工业大学材料科学与工程学院,江苏,南京,210009 |
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| 摘 要： | 针对化学镀镍换热器管束腐蚀破裂进行分析，采用XRD物相分析、EDS成分分析、力学性能测试、金相显微组织分析、SEM微观形貌分析、电化学测试等手段，分析了管束破裂的原因。结果表明，管柬外表面镍磷镀层局部发生破坏后对碳钢管束基体的加速电偶腐蚀是管束发生破裂的主要原因。
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| 关 键 词： | 化学镀镍 换热器管束 电偶腐蚀 失效分析 腐蚀破裂 |
Failure Analysis of Corrosion Cracking of Heat Exchanger Tubes Packing with Electroless Nickel |
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| SHI Hong-qi,DING Yi,MA Li-qun.Failure Analysis of Corrosion Cracking of Heat Exchanger Tubes Packing with Electroless Nickel[J].Surface Technology,2009,38(5):93-95. |
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| Authors: | SHI Hong-qi DING Yi MA Li-qun |
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| Affiliation: | SHI Hong-qi,DING Yi,MA Li-qun (School of Materials Science , Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | Corrosion cracking of heat exchanger tubes packing with electroless nickel was analyzed by means of XRD phase analysis,EDS chemical composition analysis,mechanical properties test,microstructure analysis,fracture surface analysis and electrochemical measurement.The results show that the corrosion cracking is caused by accelerative galvanic corrosion produced by local failure of coating on heat exchanger tubes |
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| Keywords: | Electroless nickel plating Heat exchanger tubes Galvanic corrosion Failure analysis corrosion cracking |
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