Scholarlink

<p>This work investigates the corrosion performance of an Al₂Cr₅Cu₅Fe₅₃Ni₃₅ multi-principal element alloy (MPEA) in a simulated soil (NS4) solution at different pH using a combination of electrochemical characterization techniques and thermodynamic modeling. Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) were conducted across a broad pH range to assess the corrosion resistance and passive film behavior of the alloy. The formation and stability of the passive layer were further examined using X-ray photoelectron spectroscopy (XPS) to determine the surface chemical species, while scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM–EDS) characterized pitting and localized corrosion after CPP testing. These experimental results were compared with computationally predicted species stability and kinetic trends derived from a Pourbaix diagram generated using thermodynamic modeling software. The findings reveal that the Al₂Cr₅Cu₅Fe₅₃Ni₃₅ MPEA forms a stable, adherent passive film with a composition that evolves with pH but remains protective across the examined range. This integrated approach underscores the utility of combining electrochemical data with computational modeling to understand and predict corrosion mechanisms in complex MPEA systems.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Evaluating the corrosion performance of a Al2Cr5Cu5Fe53Ni35 multi-principal element alloy (MPEA) in NS4 simulated soil via electrochemical characterization and thermodynamic predictions

  • 期刊论文

  • 发表日期：

    2025年9月20日

查看全文
  • Olivia Esmacher,
  • Ulises Martin,
  • Sasha George,
  • Ayush Raj,
  • Marcelo Paredes,
  • Homero Castaneda

摘要

This work investigates the corrosion performance of an Al₂Cr₅Cu₅Fe₅₃Ni₃₅ multi-principal element alloy (MPEA) in a simulated soil (NS4) solution at different pH using a combination of electrochemical characterization techniques and thermodynamic modeling. Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) were conducted across a broad pH range to assess the corrosion resistance and passive film behavior of the alloy. The formation and stability of the passive layer were further examined using X-ray photoelectron spectroscopy (XPS) to determine the surface chemical species, while scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM–EDS) characterized pitting and localized corrosion after CPP testing. These experimental results were compared with computationally predicted species stability and kinetic trends derived from a Pourbaix diagram generated using thermodynamic modeling software. The findings reveal that the Al₂Cr₅Cu₅Fe₅₃Ni₃₅ MPEA forms a stable, adherent passive film with a composition that evolves with pH but remains protective across the examined range. This integrated approach underscores the utility of combining electrochemical data with computational modeling to understand and predict corrosion mechanisms in complex MPEA systems.