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在模型石油基础设施中的生物原料诱导腐蚀的纳米镜像成像
Zhiheng Lyu1,2, Samyukta Shrivastav1, Jiahui Li1
1Department of Materials Science and Engineering, Grainger College of Engineering, University of Illinois Urbana─Champaign, Urbana, Illinois 61801, United States.
ACS nano
|July 28, 2025
概括
生物料可以腐蚀石油基础设施. 这项研究揭示了生物料副产品酸是如何在碳钢中引起腐蚀的,通过检查电腐蚀,应变和格子方向等微结构特征.
科学领域:
- 材料科学 材料科学 材料科学
- 腐蚀工程 腐蚀工程
- 能源生产 能源生产
背景情况:
- 生物原料为石油提供了一个可持续的替代品,使能源多样化.
- 由于有机酸和更高的氧含量,生物料可以在金属基础设施中引起严重的腐蚀.
- 了解生物原料腐蚀机制对于基础设施完整性至关重要.
研究的目的:
- 调查碳钢腐蚀在 pentanoic 酸中的实时启动和进展, pentanoic 酸是一种代表性的生物原料降解产品.
- 为了将现场腐蚀成像与现场微观结构特征相关联.
- 确定影响生物料环境中腐蚀行为的关键微观结构特征.
主要方法:
- 在现场液相传导电子显微镜 (LP-TEM) 用于实时腐蚀成像.
- 颗粒大小,方向和元素分布的现场表征.
- 对碳钢板的腐蚀进展进行相对的多式联络分析.
主要成果:
- 电腐蚀被确定为腐蚀的起始点.
- 发现材料应变加速了腐蚀过程.
- 格子的方向显著指导着腐蚀的传播.
- 谷物边界对腐蚀率的影响最小,与水性环境不同.
结论:
- 碳钢的内在微观结构特征在生物原料衍生有机酸的腐蚀行为中起着至关重要的作用.
- 生物原料环境中的腐蚀机制不同于传统的水性腐蚀.
- 调查结果为开发有效的腐蚀减缓策略提供了洞察力,用于暴露于生物料的石油基础设施.
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