时效沉淀对新型Ni50Cr20Co15Al10V5多主元素合金在硫酸介质中腐蚀行为的影响

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

Corrosion Science Pub Date : 2025-04-22 DOI:10.1016/j.corsci.2025.112973

Qiancheng Zhao , Hong Luo , Shujun Dong , Minglei Sun , Zejun Li , Luntao Wang , Lifeng Hou

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引用次数: 0

摘要

研究了时效析出物对Ni50Cr20Co15Al10V5多主元素合金在0.5 M H2SO4溶液中耐蚀性的影响。对合金在再结晶和时效状态下的显微组织进行了分析。结果表明，含析出相的合金具有较低的耐蚀性、较低的极化电阻和较高的被动电流密度，这与钝化膜化学成分的变化有关。析出物降低了合金的钝化膜稳定性。有沉淀的区域，伏特电位较低，表现出优先腐蚀，导致耐蚀性降低。

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Effect of aging precipitates on the corrosion behavior of a novel Ni50Cr20Co15Al10V5 multi-principal element alloy in sulfuric acid medium

The effect of aging precipitates on the corrosion resistance of a novel Ni₅₀Cr₂₀Co₁₅Al₁₀V₅ multi-principal element alloy in a 0.5 M H₂SO₄ solution was studied. The microstructure of the alloys in both recrystallized and aged states was analyzed. The results indicated that alloys containing precipitates exhibited lower corrosion resistance, with lower polarization resistance and higher passive current density, which was attributed to changes in the chemical composition of the passive film. Precipitates reduced passive film stability of the alloys. Areas with precipitates, showing lower Volta potential, exhibited preferential corrosion, leading to a reduction in corrosion resistance.

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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.