Effects of Cerium on Microstructure and Corrosion Resistance of High Manganese Steel for Liquefied Natural Gas Tank

IF 0.8 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

Protection of Metals and Physical Chemistry of Surfaces Pub Date : 2025-03-09 DOI:10.1134/S2070205124702265

Jiaxun Qiu, Chongyi Wei, Nan Lv, Xiaolei Zhu, Shaopeng Cui

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Abstract

Effects of cerium (Ce) on the microstructure and corrosion resistance of high manganese steel (HMS) in 3.5 wt % NaCl were investigated. It was found that the carbides in the grain boundaries in HMS were refined with the addition of Ce. The corrosion current density was reduced to about one-fifth of the original with the addition of Ce, and the resistance of the oxide film (R_f) with the addition of Ce was 2.549 × 10³ Ω cm^–2, which was increased by nearly an order of magnitude compared with that of without Ce addition. When Ce was added, the degree of segregation of carbides in the HMS substrate was weakened, and the entire corrosion process was dominated by uniform corrosion. The corrosion product film of HMS with the addition of Ce was relatively dense and uniform. The corrosion resistance of HMS with the addition of Ce was improved significantly. The influence mechanisms of Ce on the microstructure and corrosion resistance of HMS are also discussed.

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铈对液化天然气储罐用高锰钢组织及耐蚀性的影响

研究了铈（Ce）对高锰钢（HMS）在3.5 wt % NaCl中组织和耐蚀性的影响。结果表明，随着Ce的加入，HMS晶界中的碳化物得到了细化。Ce的加入使腐蚀电流密度降低到原来的五分之一左右，氧化膜的电阻（Rf）为2.549 × 103 Ω cm-2，比未添加Ce的氧化膜提高了近一个数量级。添加Ce后，HMS基体中碳化物偏析程度减弱，整个腐蚀过程以均匀腐蚀为主。添加Ce后的HMS腐蚀产物膜相对致密、均匀。Ce的加入显著提高了HMS的耐蚀性。讨论了Ce对HMS组织和耐蚀性的影响机理。

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来源期刊

Protection of Metals and Physical Chemistry of Surfaces 工程技术-冶金工程

CiteScore

1.90

自引率

18.20%

发文量

审稿时长

4-8 weeks

期刊介绍： Protection of Metals and Physical Chemistry of Surfaces is an international peer reviewed journal that publishes articles covering all aspects of the physical chemistry of materials and interfaces in various environments. The journal covers all related problems of modern physical chemistry and materials science, including: physicochemical processes at interfaces; adsorption phenomena; complexing from molecular and supramolecular structures at the interfaces to new substances, materials and coatings; nanoscale and nanostructured materials and coatings, composed and dispersed materials; physicochemical problems of corrosion, degradation and protection; investigation methods for surface and interface systems, processes, structures, materials and coatings. No principe restrictions exist related systems, types of processes, methods of control and study. The journal welcomes conceptual, theoretical, experimental, methodological, instrumental, environmental, and all other possible studies.