Scholarlink

<p>In order to solve the problems of friction, corrosion, and tribocorrosion of equipment in extreme Marine environments, this study prepared (FeSiBCr)<sub>1-x</sub> (CoCrFeNi)<sub>x</sub> HEAs-amorphous composite coating on E690 Marine steel by laser cladding. The x = 25% coating achieved maximal amorphous content, finest crystalline grain size, and peak microhardness. Conventional sliding wear tests revealed its optimal tribological performance: lowest friction coefficient and 40% reduced wear rate versus pure iron-based amorphous coating, attributed to a transition from adhesive to abrasive wear mechanisms. In 3.5 wt.% NaCl, electrochemical tests confirmed superior corrosion resistance: noblest open-circuit potential and minimal corrosion current density. Subsequent tribocorrosion tests validated the superior performance of the x = 25% coating, where the optimized dual-phase structure significantly inhibited detrimental microgalvanic corrosion and pitting initiation under simultaneous mechanical and chemical attack. This composition balances amorphous phase fraction and crystalline refinement, delivering synergistically optimized hardness, wear, corrosion, and tribocorrosion resistance for marine applications.</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

Tribocorrosion Performance of Fe-Based Amorphous/CoCrFeNi-Based High-Entropy Alloy Composite Coating by Laser Cladding

  • 期刊论文

  • 发表日期：

    2025年11月10日

查看全文
  • Hanchi Yang,
  • Na Tan,
  • Bingwen Lu,
  • Yang Li,
  • Xiaochuan Dong,
  • Tao Wang,
  • Guohe Li

摘要

In order to solve the problems of friction, corrosion, and tribocorrosion of equipment in extreme Marine environments, this study prepared (FeSiBCr)1-x (CoCrFeNi)x HEAs-amorphous composite coating on E690 Marine steel by laser cladding. The x = 25% coating achieved maximal amorphous content, finest crystalline grain size, and peak microhardness. Conventional sliding wear tests revealed its optimal tribological performance: lowest friction coefficient and 40% reduced wear rate versus pure iron-based amorphous coating, attributed to a transition from adhesive to abrasive wear mechanisms. In 3.5 wt.% NaCl, electrochemical tests confirmed superior corrosion resistance: noblest open-circuit potential and minimal corrosion current density. Subsequent tribocorrosion tests validated the superior performance of the x = 25% coating, where the optimized dual-phase structure significantly inhibited detrimental microgalvanic corrosion and pitting initiation under simultaneous mechanical and chemical attack. This composition balances amorphous phase fraction and crystalline refinement, delivering synergistically optimized hardness, wear, corrosion, and tribocorrosion resistance for marine applications.