Scholarlink

<p>Surface nanocrystallization treatment remarkably enhances comprehensive mechanical properties in metallic alloy systems through the construction of hierarchical gradient nanostructured surfaces. Nevertheless, the governing mechanisms underlying grain size effects on corrosion resistance remain elusive, and consequently, predicting environment-specific corrosion responses based on grain size modulation persists as a critical challenge in corrosion science. By incorporating the quantitative relationship between grain size and surface energy into the improved Butler–Volmer (IBV) formalism, we have developed an extended grain Butler–Volmer (GBV) model for electrochemical interface characterization. While existing IBV formulations account for a material’s intrinsic surface properties and strain energy effects on corrosion dynamics, they fundamentally neglect the grain size-dependent interfacial energetics critical for nanostructured systems. Systematic grain refinement in electrochemical environments induces synergistic variations in surface energy and work function, which concomitantly alter both equilibrium potential and exchange current density aspects of electrode reactions, ultimately dictating the corrosion potential and current density in anodic polarization profiles. Through rigorous experimental validation using S30408 stainless steel, the GBV model demonstrates unprecedented capability in correlating surface energetics with corrosion kinetics through first-principles material descriptors, thereby advancing beyond conventional mono-parametric approaches limited to either surface energy or work function evaluations.</p> Graphical Abstract <p></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

A grain size-related electrochemical polarization and corrosion kinetics model

  • 期刊论文

  • 发表日期：

    2025年10月24日

查看全文
  • Zesi Ding,
  • Xinjun Yang,
  • Zhenfei Wang,
  • Dongxiang Wang,
  • Fangyang Yuan,
  • Wei Yu,
  • Jiyun Du

摘要

Surface nanocrystallization treatment remarkably enhances comprehensive mechanical properties in metallic alloy systems through the construction of hierarchical gradient nanostructured surfaces. Nevertheless, the governing mechanisms underlying grain size effects on corrosion resistance remain elusive, and consequently, predicting environment-specific corrosion responses based on grain size modulation persists as a critical challenge in corrosion science. By incorporating the quantitative relationship between grain size and surface energy into the improved Butler–Volmer (IBV) formalism, we have developed an extended grain Butler–Volmer (GBV) model for electrochemical interface characterization. While existing IBV formulations account for a material’s intrinsic surface properties and strain energy effects on corrosion dynamics, they fundamentally neglect the grain size-dependent interfacial energetics critical for nanostructured systems. Systematic grain refinement in electrochemical environments induces synergistic variations in surface energy and work function, which concomitantly alter both equilibrium potential and exchange current density aspects of electrode reactions, ultimately dictating the corrosion potential and current density in anodic polarization profiles. Through rigorous experimental validation using S30408 stainless steel, the GBV model demonstrates unprecedented capability in correlating surface energetics with corrosion kinetics through first-principles material descriptors, thereby advancing beyond conventional mono-parametric approaches limited to either surface energy or work function evaluations.

Graphical Abstract