Combining Thermodynamics and Kinetics to Investigate the Corrosion of 3Cr Steel and HP-13Cr Stainless Steel in Extreme Oil-Gas Environments

IF 1.1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Corrosion Pub Date : 2024-03-12 DOI:10.5006/4490

Hao Xue, Yang Zhao, Tao Zhang, Fuhui Wang

引用次数: 0

Abstract

The corrosion behavior of 3Cr steel and HP-13Cr stainless steel (SS) under high temperature and CO2 or H2S pressure environments was investigated by immersion tests and multiple characterizations of corrosion films, and analyzed by combining the Pourbaix diagram and kinetic calculations. At 180 °C/3.8 MPa CO2, both 3Cr steel and HP-13Cr SS exhibited double-layered corrosion films, comprising a crystalline FeCO3 outer layer and an inner Cr2O3 and Cr(OH)3 layer. Furthermore, at 180 °C/3.8 MPa H2S, the corrosion films of both steels consist of an outer crystalline pyrrhotite and pyrite layer and an inner Cr2O3 and Cr(OH)3 layer. The corrosion resistance of 3Cr in H2S is inferior to that of HP-13Cr SS due to the influence of stress corrosion cracking but is close to that of HP-13Cr SS in CO2. Therefore, 3Cr steel could be considered a cost-effective alternative to HP-13Cr SS in CO2 environments.

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结合热力学和动力学研究 3Cr 钢和 HP-13Cr 不锈钢在极端油气环境中的腐蚀情况

通过浸泡试验和腐蚀膜的多重表征，研究了 3Cr 钢和 HP-13Cr 不锈钢（SS）在高温和 CO2 或 H2S 压力环境下的腐蚀行为，并结合 Pourbaix 图和动力学计算进行了分析。在 180 °C/3.8 MPa CO2 条件下，3Cr 钢和 HP-13Cr SS 都表现出双层腐蚀膜，包括外层结晶的 FeCO3 和内层的 Cr2O3 和 Cr(OH)3。此外，在 180 °C/3.8 MPa H2S 条件下，两种钢的腐蚀膜都由外层结晶黄铁矿和黄铁矿层和内层 Cr2O3 和 Cr(OH)3 层组成。由于应力腐蚀开裂的影响，3Cr 在 H2S 中的耐腐蚀性不如 HP-13Cr SS，但与 HP-13Cr SS 在 CO2 中的耐腐蚀性接近。因此，在 CO2 环境中，3Cr 钢可被视为 HP-13Cr SS 的一种经济有效的替代品。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Corrosion MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING

CiteScore

2.80

自引率

12.50%

发文量

审稿时长

3 months

期刊介绍： CORROSION is the premier research journal featuring peer-reviewed technical articles from the world’s top researchers and provides a permanent record of progress in the science and technology of corrosion prevention and control. The scope of the journal includes the latest developments in areas of corrosion metallurgy, mechanisms, predictors, cracking (sulfide stress, stress corrosion, hydrogen-induced), passivation, and CO2 corrosion. 70+ years and over 7,100 peer-reviewed articles with advances in corrosion science and engineering have been published in CORROSION. The journal publishes seven article types – original articles, invited critical reviews, technical notes, corrosion communications fast-tracked for rapid publication, special research topic issues, research letters of yearly annual conference student poster sessions, and scientific investigations of field corrosion processes. CORROSION, the Journal of Science and Engineering, serves as an important communication platform for academics, researchers, technical libraries, and universities. Articles considered for CORROSION should have significant permanent value and should accomplish at least one of the following objectives: • Contribute awareness of corrosion phenomena, • Advance understanding of fundamental process, and/or • Further the knowledge of techniques and practices used to reduce corrosion.