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首页> 外文期刊>Journal of Materials Engineering and Performance >Characterization of Corrosion Product Layers from CO_2 Corrosion of 13Cr Stainless Steel in Simulated Oilfield Solution
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Characterization of Corrosion Product Layers from CO_2 Corrosion of 13Cr Stainless Steel in Simulated Oilfield Solution

机译：模拟油田溶液中由13Cr不锈钢的CO_2腐蚀引起的腐蚀产物层的表征

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摘要

The influence of temperature and flow rate on the characterization and mechanisms of corrosion product layers from CO_2 corrosion of 13Cr stainless steel was carried out in simulated oilfield solution. Cyclic potentiodynamic polarization method as well as weight loss tests in autoclave were utilized to investigate pitting corrosion behavior at various temperatures. Weight loss tests were performed at 100 and 160℃ under dynamic and static flow conditions. At the same time, the significant pitting parameters such as E_(corr), E_(pit), E_(pp), ΔE, and I_(pass) in cyclic polarization curves at various temperatures were analyzed and compared for revealing the pitting behavior of 13Cr stainless steel. The surface measurement techniques such as SEM, XRD, and XPS were used to detect the corrosion product layers. The results showed that both temperature and flow rate had significant effects on characterization of corrosion product layers or passive films formed on 13Cr stainless steel in CO_2 corrosion system. At high temperature, lots of pits were formed at the localized corrosion areas of metal surfaces. Corrosion rates under the condition of 5 m/s were higher than those under the static condition regardless of the test temperatures.
机译：在模拟油田溶液中，进行了温度和流量对13Cr不锈钢CO_2腐蚀腐蚀产物层表征及机理的影响。循环电位动力极化方法以及高压釜的失重测试被用来研究在不同温度下的点蚀行为。在动态和静态流动条件下分别在100和160℃下进行失重测试。同时，分析并比较了不同温度下循环极化曲线中重要的点蚀参数，如E_（corr），E_（pit），E_（pp），ΔE和I_（pass），以揭示材料的点蚀行为。 13Cr不锈钢。表面测量技术（例如SEM，XRD和XPS）用于检测腐蚀产物层。结果表明，温度和流量对CO_2腐蚀体系中13Cr不锈钢表面腐蚀产物层或钝化膜的表征有重要影响。在高温下，在金属表面的局部腐蚀区域会形成许多凹坑。无论测试温度如何，在5 m / s条件下的腐蚀速率都比静态条件下的高。

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