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<p>The ultra-fast cooling of laser cladding enables Fe-based alloy coatings with high amorphous-phase content, imparting superior hardness, wear resistance, and corrosion resistance that mitigate wear in mining and corrosion in marine environments. This review summarizes advances in composition design, laser-parameter optimization, and performance-enhancement mechanisms, with a systematic analysis of the roles of Cr, Mo, and B in amorphous formation. The effects of scanning speed and laser power are compared to identify processing windows that maximize amorphous content and density while suppressing cracks. Furthermore, strategies such as high-entropy alloying, nano-phase strengthening, and gradient structures are evaluated, and their advantages and limitations in reducing brittleness and expanding application potential are discussed. Beyond traditional industrial applications, these coatings also show promise in biomedical implants. With advances in intelligent process control and eco-friendly materials, Fe-based amorphous coatings are expected to promote greater efficiency, sustainability, and multi-functionality in surface engineering.</p>

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Research status of laser cladding of Fe-based amorphous coatings

  • 期刊论文

  • 发表日期：

    2026年1月13日

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  • Chengming Cao,
  • Yanhai Cheng,
  • Hewei Zhu,
  • Peng Liu,
  • Kai Bai,
  • Ruolan Zhang,
  • Qi Sun

摘要

The ultra-fast cooling of laser cladding enables Fe-based alloy coatings with high amorphous-phase content, imparting superior hardness, wear resistance, and corrosion resistance that mitigate wear in mining and corrosion in marine environments. This review summarizes advances in composition design, laser-parameter optimization, and performance-enhancement mechanisms, with a systematic analysis of the roles of Cr, Mo, and B in amorphous formation. The effects of scanning speed and laser power are compared to identify processing windows that maximize amorphous content and density while suppressing cracks. Furthermore, strategies such as high-entropy alloying, nano-phase strengthening, and gradient structures are evaluated, and their advantages and limitations in reducing brittleness and expanding application potential are discussed. Beyond traditional industrial applications, these coatings also show promise in biomedical implants. With advances in intelligent process control and eco-friendly materials, Fe-based amorphous coatings are expected to promote greater efficiency, sustainability, and multi-functionality in surface engineering.