| 李科,李天雷,李星,施岱艳,杨志,钟显康.酸性含硫工况下IN625合金的耐蚀性评价[J].装备环境工程,2025,22(2):133-141. LI Ke,LI Tianlei,LI Xing,SHI Daiyan,YANG Zhi,ZHONG Xiankang.Corrosion Resistance Evaluation of IN625 Alloys under Acidic Sulfur-containing Conditions[J].Equipment Environmental Engineering,2025,22(2):133-141. |
| 酸性含硫工况下IN625合金的耐蚀性评价 |
| Corrosion Resistance Evaluation of IN625 Alloys under Acidic Sulfur-containing Conditions |
| 投稿时间：2024-11-01 修订日期：2024-11-25 |
| DOI：10.7643/issn.1672-9242.2025.02.015 |
| 中文关键词: IN625合金 元素硫 腐蚀产物膜 酸性环境 腐蚀评价 多因素耦合中图分类号:TG172 文献标志码:A 文章编号:1672-9242(2025)02-0133-09 |
| 英文关键词:IN625 alloys elemental sulfur corrosion product film acidic environment corrosion evaluation multi-factor coupling |
| 基金项目: |
|
|
| Author | Institution |
| LI Ke | Southwest Branch of China Petroleum Engineering & Construction Corporation, Chengdu 610041, China |
| LI Tianlei | Southwest Branch of China Petroleum Engineering & Construction Corporation, Chengdu 610041, China |
| LI Xing | Turkmenistan Branch of China Petroleum Engineering & Construction Corporation, Beijing 100120, China |
| SHI Daiyan | Southwest Branch of China Petroleum Engineering & Construction Corporation, Chengdu 610041, China |
| YANG Zhi | School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China |
| ZHONG Xiankang | School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China |
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 目的 对IN625合金在H2S、CO2、元素硫、温度等多因素耦合作用下的腐蚀适应性进行评价。方法 采用高温高压反应釜模拟IN625合金在酸性含硫工况下的腐蚀过程，并通过失重法、表面分析技术，深入探讨元素硫的不同形态、温度条件以及H2S和CO2的分压对IN625合金腐蚀行为的影响规律。结果 IN625形成的腐蚀产物膜结构均匀且致密，具备优异的耐蚀性能。在酸性气体存在的工况下，合金表面出现点蚀现象，其在液相或气相中的腐蚀速率相比无酸性气体存在的工况提高了2~3倍，最高可达0.064 6 mm/a。全覆盖元素硫引发均匀腐蚀，悬浮元素硫导致局部腐蚀，腐蚀速率均随温度升高而增大。结论 在含有元素硫的酸性气田环境下，尽管IN625合金整体上具有较好的耐蚀性，但在多因素耦合的复杂工况下仍然面临腐蚀风险。因此，为确保气田设备的安全运行，需要根据具体的服役工况，合理选择材料，并采取适当的防护措施。 |
| 英文摘要: |
| The work aims to evaluate the corrosion adaptability of IN625 alloy under the coupling effects of H2S, CO2, elemental sulfur, and temperature. A high-temperature and high-pressure reactor was used to simulate the corrosion process of IN625 alloy under acidic sulfur-containing conditions, and the effect of different forms of elemental sulfur, temperature conditions, and the partial pressures of H2S and CO2 on the corrosion behavior of IN625 alloy was deeply explored through weight loss method and surface analysis techniques. The corrosion product film deposited on IN625 surface was uniform and dense, with excellent corrosion resistance. However, in the presence of acidic gases, pitting corrosion occurred on the alloy surface, and its corrosion rate in the liquid or gas phase was 2 to 3 times higher than that in the absence of acidic gases, reaching a maximum of 0.064 6 mm/a. Full coverage of elemental sulfur caused uniform corrosion, while suspended elemental sulfur lead to localized corrosion, with the corrosion rate increasing with temperature. In acidic gas fields containing elemental sulfur, although IN625 alloy generally has good corrosion resistance, it still faces corrosion risks under complex conditions with multiple factors coupled. Therefore, to ensure the safe operation of gas field equipment, it is necessary to reasonably select materials and take appropriate protective measures based on specific service conditions. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
