AlFe2.5NiMoNbCr高熵合金的高温氯化物腐蚀行为

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2022-04-15 DOI:10.1016/j.corsci.2022.110139

Lingyun Bai , Wenyi Peng , Jun Zhu , Xuecheng Wu , Xiongtao Shi , Junhuai Xiang , Xiaohua Deng , Yuqing Wang , Zuxiang Sun , Siqi Yu

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引用次数: 6

摘要

对AlFe2.5NiMoNbCr高熵合金进行了高温氯化物腐蚀试验，并与Inconel625和AlFeNiMoNb板进行了比较。在AlFe2.5NiMoNbCr高熵合金的腐蚀过程中，元素在Cr损耗区均匀分散，促进了连续Al2O3层的形成，枝晶Al2O3通过“氧化物钉钉”机制提高了腐蚀层的附附性。在室温下密封几天的样品上观察金属氯氧化物，补充了高温氯腐蚀反应。Al2O3/Cr2O3双层使得AlFe2.5NiMoNbCr比单层的Inconel625具有更好的潜在应用价值。

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High temperature chloride corrosion behavior of AlFe2.5NiMoNbCr high-entropy alloy

High temperature chloride corrosion tests of AlFe_2.5NiMoNbCr high-entropy alloy were carried out comparing with those of Inconel625 and AlFeNiMoNb plate. Uniform dispersion of elements in the Cr depletion zone existed during the corrosion process of AlFe_2.5NiMoNbCr high-entropy alloy promoted the formation of continuous Al₂O₃ layer, and the dendritic Al₂O₃ improved the adhesion of the corrosion layer through “oxide pegging” mechanism. Observation of metal chloride oxides on the samples sealed for several days at R.T. supplemented the reaction of high temperature chlorine corrosion. Al₂O₃/Cr₂O₃ double-layer makes AlFe_2.5NiMoNbCr have better potential application value than Inconel625 with a single Cr₂O₃ layer.

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

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.