| 波纹不锈钢换热板腐蚀开裂失效分析 |
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| 引用本文： | 熊金平,左禹,胡定铸. 波纹不锈钢换热板腐蚀开裂失效分析[J]. 腐蚀科学与防护技术, 2005, 17(6): 435-437 |
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| 作者姓名： | 熊金平 左禹 胡定铸 |
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| 作者单位： | 1. 北京化工大学,材料科学与工程学院,北京,100029
2. 空军雷达学院,武汉,430012 |
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| 摘 要： | 对失效开裂的波纹不锈钢板进行了外观检查，用电子显微镜观察了开裂断口和裂纹断口的形貌与特征；能谱分析得到了断口腐蚀产物和不锈钢板上沉积物的元素组成与含量；红外光谱分析结果表明使用在波纹不锈钢板端之间的三元乙丙橡胶密封垫片用粘合剂为氯丁橡胶，分析推断氯离子来源于氯丁橡胶的高温分解.综合分析结果表明，波纹不锈钢换热板失效开裂是由氯离子导致的应力腐蚀开裂所致；以穿晶型开裂为主，同时也存在沿晶型开裂.
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| 关 键 词： | 不锈钢 换热器 应力腐蚀开裂 |
| 文章编号： | 1002-6495（2005）136-0435-03 |
| 收稿时间： | 2004-05-14 |
| 修稿时间： | 2004-08-18 |
FAILURE ANALYSIS FOR CORROSION CRACKING OF A HEAT- EXCHANGER OF STAINLESS STEEL |
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| XIONG Jin-ping,ZUO Yu,HU Ding-zhu. FAILURE ANALYSIS FOR CORROSION CRACKING OF A HEAT- EXCHANGER OF STAINLESS STEEL[J]. Corrosion Science and Protection Technology, 2005, 17(6): 435-437 |
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| Authors: | XIONG Jin-ping ZUO Yu HU Ding-zhu |
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| Affiliation: | 1. School of Materials Science and Engineering, Beijing University of Chemical TechnoLogy, 100029 Beijing;2. Radar Institute of Air Force, Wuhnn 430012 |
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| Abstract: | The appearance of the failed heat - exchanger of stainless steel was examined by naked eye, the morphology and feature of the fracture of the failed heat - exchanger of stainless steel were obtained by SEM, the element content of the corrosion product on the fracture and the scales on the stainless steel were also analyzed. The IR result indicted that the rubber seal gasket was made of polychloroprene, which can be decomposed to produce Cl^- at high temperature. The overall analysis result showed that stress corrosion cracking was induced by Cl^-, the cracks were trans - granular mainly but there were also inter- granular cracks. |
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| Keywords: | stalnless steel heat - exchanger stress corrosion crack failure analysis |
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