| 不锈钢导管泄漏原因分析 |
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| 引用本文： | 张振宇,燕翔,徐晓东,王祺,姜涛,侯学勤.不锈钢导管泄漏原因分析[J].失效分析与预防,2011,6(2):119-123. |
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| 作者姓名： | 张振宇 燕翔 徐晓东 王祺 姜涛 侯学勤 |
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| 作者单位： | 1. 航天科工集团第九研究院8602厂,湖北孝感,432100
2. 北京航空材料研究院,中国航空工业集团公司失效分析中心,试金石检测科技有限公司,北京,100095 |
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| 摘 要： | 某导管在服役期间发生泄漏,管内壁附着大量黄褐色多余物,采用ICP(等离子光谱仪)对导管化学成分进行分析,采用金相显微镜对金相组织进行检查,同时采用扫描电子显微镜对导管泄漏部位、过滤器滤芯和气瓶内壁进行微观观察,采用X射线能谱仪对多余物及气瓶内壁各种污染物进行成分测定.结果表明:导管内壁多余物为腐蚀产物,泄漏部位为腐蚀形...
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| 关 键 词： | 泄漏 奥氏体不锈钢 点腐蚀 沿晶腐蚀 Cl- |
Analysis on Leakage of Stainless Steel Pipe |
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| ZHANG Zheng-yu,YAN Xiang,XU Xiao-dong,WANG Qi,JIANG Tao,HOU Xue-qin.Analysis on Leakage of Stainless Steel Pipe[J].Failure Analysis and Prevention,2011,6(2):119-123. |
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| Authors: | ZHANG Zheng-yu YAN Xiang XU Xiao-dong WANG Qi JIANG Tao HOU Xue-qin |
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| Affiliation: | ZHANG Zheng-yu1,YAN Xiang1,XU Xiao-dong1,WANG Qi2,JIANG Tao2,HOU Xue-qin2(1.The Ninth Academy of China Aerospace Science & Industry Corp.,No.8602 factory,Hubei Xiaogan 432100,China,2.AVIC Failure Analysis Center,Beijing Institute of Aeronautical Materials,Touchstone Testing Innovation Cooperation,Beijing 100095,China) |
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| Abstract: | Leakage occurred to a pipe during service and the inner surface of the pipe had much snuffcolored matter.The leakage cause was analyzed by chemical composition analysis,metallurgical structure examination,macro and micro observation,and energy spectrum analysis.The results indicate that the snuffcolored matter on the inner surface of the pipe is corrosion products.The leakage was caused by pit corrosion hole.The pit corrosion was caused by chlorine ion resulting from the co-effect of remaining salts and wat... |
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| Keywords: | leakage austenite stainless steel pit corrosion intercrystalline corrosion Cl |
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