| 高温高压H_2S/CO_2环境中镍基合金825的腐蚀行为 |
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| 引用本文： | 戈磊,陈长风,郑树启,蔡晓文.高温高压H_2S/CO_2环境中镍基合金825的腐蚀行为[J].腐蚀与防护,2009(10). |
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| 作者姓名： | 戈磊 陈长风 郑树启 蔡晓文 |
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| 作者单位： | 中国石油大学(北京)材料科学与工程系; |
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| 摘 要： | 针对高含硫油气田开发过程中所面临的材料腐蚀问题,采用高温高压哈氏合金反应釜,对镍基合金825在高含量H2S/CO2环境中的腐蚀行为进行了研究,利用SEM、EDS、电化学等手段分析了腐蚀试样的微观形貌和结构特征,探讨了腐蚀机理。结果表明,在高温高压H2S/CO2环境中825合金腐蚀很轻微,其最大腐蚀速率仅为0.068mm/a,应力腐蚀试样表面没有出现裂纹,但有点蚀,点蚀在晶界处形核,表明镍基合金的晶面为其薄弱环节,容易遭到破坏。
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| 关 键 词： | 镍基合金825 H2S/CO2 高温高压 腐蚀速率 |
Corrosion Behavior of Nickel Based Alloy 825 in High Temperature and High Pressure H_2S/CO_2 Environments |
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| GE Lei,CHEN Chang-feng,ZHENG Shu-qi,CAI Xiao-wen.Corrosion Behavior of Nickel Based Alloy 825 in High Temperature and High Pressure H_2S/CO_2 Environments[J].Corrosion & Protection,2009(10). |
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| Authors: | GE Lei CHEN Chang-feng ZHENG Shu-qi CAI Xiao-wen |
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| Affiliation: | GE Lei,CHEN Chang-feng,ZHENG Shu-qi,CAI Xiao-wen(China University of Petroleum,Beijing 102249,China) |
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| Abstract: | To resolve the materials corrosion problems during exploiting high sulfur oil and gas field,the corrosion behavior of nickel based alloy 825 in high temperature and high pressure environments were studied.The scanning electron microscopy(SEM),energy disperse spectroscopy(EDS) and electrochemical methods were applied to characterize the microstructure and corrosion performance of the samples.The corrosion mechanism was also proposed and discussed.The results indicated that slight corrosion was observed on th... |
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| Keywords: | nickel based alloy 825 H2S/CO2 high temperature and high pressure corrosion rate |
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