Understanding the relationship between the release of transition product CO and the early corrosion behavior of martensitic heat-resistant steel in supercritical CO2
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Abstract
The relationship between the release of transition product CO and the early corrosion behavior of P92 steel in supercritical CO2 was studied. The release concentration of CO reached the highest value at 300 min ∼ 400 min. Some CO was trapped in the growing Fe3O4 layer, which contributed to the formation of pores. These pores facilitated the diffusion of CO2 and CO, leading to the existence of carbon in the FeCr2O4 layer in the form of carbides. The formation of the oxide film and carbon migration were complementary processes, but the carburization reaction lagged behind the oxidation reaction.
研究了过渡产物 CO 的释放与 P92 钢在超临界 CO2 中的早期腐蚀行为之间的关系。CO 的释放浓度在 300 分钟 ∼ 400 分钟时达到最高值。一些 CO 被截留在生长的 Fe3O4 层中，从而形成了孔隙。这些孔隙促进了 CO2 和 CO 的扩散，导致碳以碳化物的形式存在于 FeCr2O4 层中。氧化膜的形成和碳的迁移是相辅相成的过程，但渗碳反应滞后于氧化反应。
期刊介绍：
Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies.
This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.
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