The corrosion behavior and passive film properties of the cast and annealed AlCoCrFeNi2.1 eutectic high-entropy alloy in sulfuric acid solution

Yu Fu; Hong Luo; Xinren Chen; J. Manoj Prabhakar; Xuefei Wang; Hongxu Cheng; Cuiwei Du; Songqing Hu; Xiaogang Li

doi:10.1016/j.corsci.2024.112456

The corrosion behavior and passive film properties of the cast and annealed AlCoCrFeNi_2.1 eutectic high-entropy alloy in sulfuric acid solution

Yu Fu
, Hong Luo^*
, Xinren Chen
, J. Manoj Prabhakar
, Xuefei Wang
, Hongxu Cheng
, Cuiwei Du
, Songqing Hu
, Xiaogang Li

^*此作品的通讯作者

University of Science and Technology Beijing
Max Planck Institute for Sustainable Materials
China University of Petroleum (East China)

科研成果: 期刊稿件 › 文章 › 同行评审

33 引用（Scopus）

摘要

The effect of microstructure on the corrosion behavior and film properties of strengthened AlCoCrFeNi_2.1 eutectic high-entropy alloy (EHEA) was investigated. Annealing of the 80 % cold-rolled AlCoCrFeNi_2.1 EHEA at 650–1200 ℃ effectively improved the stable passive region to 930 mV, and decreased the passive current density by 25 % to 3.5 μA/cm² compared with the cast alloy in 0.1 M H₂SO₄ solution. The improved corrosion resistance of the annealed AlCoCrFeNi_2.1 EHEA was attributed to the increasing oxides proportion and thickness of passive film and the reduced composition difference between FCC and B2 phases. The B2 phase in lamellae suffered the severest corrosion.

源语言	英语
文章编号	112456
期刊	Corrosion Science
卷	240
DOI	https://doi.org/10.1016/j.corsci.2024.112456
出版状态	已出版 - 11月 2024
已对外发布	是

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title = "The corrosion behavior and passive film properties of the cast and annealed AlCoCrFeNi2.1 eutectic high-entropy alloy in sulfuric acid solution",

abstract = "The effect of microstructure on the corrosion behavior and film properties of strengthened AlCoCrFeNi2.1 eutectic high-entropy alloy (EHEA) was investigated. Annealing of the 80 \% cold-rolled AlCoCrFeNi2.1 EHEA at 650–1200 ℃ effectively improved the stable passive region to 930 mV, and decreased the passive current density by 25 \% to 3.5 μA/cm2 compared with the cast alloy in 0.1 M H2SO4 solution. The improved corrosion resistance of the annealed AlCoCrFeNi2.1 EHEA was attributed to the increasing oxides proportion and thickness of passive film and the reduced composition difference between FCC and B2 phases. The B2 phase in lamellae suffered the severest corrosion.",

keywords = "AES, Corrosion behavior, High-entropy alloy, Passive film, XPS",

author = "Yu Fu and Hong Luo and Xinren Chen and Prabhakar, \{J. Manoj\} and Xuefei Wang and Hongxu Cheng and Cuiwei Du and Songqing Hu and Xiaogang Li",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier Ltd",

year = "2024",

month = nov,

doi = "10.1016/j.corsci.2024.112456",

language = "英语",

volume = "240",

journal = "Corrosion Science",

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T1 - The corrosion behavior and passive film properties of the cast and annealed AlCoCrFeNi2.1 eutectic high-entropy alloy in sulfuric acid solution

AU - Fu, Yu

AU - Luo, Hong

AU - Chen, Xinren

AU - Prabhakar, J. Manoj

AU - Wang, Xuefei

AU - Cheng, Hongxu

AU - Du, Cuiwei

AU - Hu, Songqing

AU - Li, Xiaogang

PY - 2024/11

Y1 - 2024/11

N2 - The effect of microstructure on the corrosion behavior and film properties of strengthened AlCoCrFeNi2.1 eutectic high-entropy alloy (EHEA) was investigated. Annealing of the 80 % cold-rolled AlCoCrFeNi2.1 EHEA at 650–1200 ℃ effectively improved the stable passive region to 930 mV, and decreased the passive current density by 25 % to 3.5 μA/cm2 compared with the cast alloy in 0.1 M H2SO4 solution. The improved corrosion resistance of the annealed AlCoCrFeNi2.1 EHEA was attributed to the increasing oxides proportion and thickness of passive film and the reduced composition difference between FCC and B2 phases. The B2 phase in lamellae suffered the severest corrosion.

AB - The effect of microstructure on the corrosion behavior and film properties of strengthened AlCoCrFeNi2.1 eutectic high-entropy alloy (EHEA) was investigated. Annealing of the 80 % cold-rolled AlCoCrFeNi2.1 EHEA at 650–1200 ℃ effectively improved the stable passive region to 930 mV, and decreased the passive current density by 25 % to 3.5 μA/cm2 compared with the cast alloy in 0.1 M H2SO4 solution. The improved corrosion resistance of the annealed AlCoCrFeNi2.1 EHEA was attributed to the increasing oxides proportion and thickness of passive film and the reduced composition difference between FCC and B2 phases. The B2 phase in lamellae suffered the severest corrosion.

KW - AES

KW - Corrosion behavior

KW - High-entropy alloy

KW - Passive film

KW - XPS

UR - https://www.scopus.com/pages/publications/85204684091

U2 - 10.1016/j.corsci.2024.112456

DO - 10.1016/j.corsci.2024.112456

M3 - 文章

AN - SCOPUS:85204684091

SN - 0010-938X

VL - 240

JO - Corrosion Science

JF - Corrosion Science

M1 - 112456

ER -

The corrosion behavior and passive film properties of the cast and annealed AlCoCrFeNi2.1 eutectic high-entropy alloy in sulfuric acid solution

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The corrosion behavior and passive film properties of the cast and annealed AlCoCrFeNi_2.1 eutectic high-entropy alloy in sulfuric acid solution