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<p>The effective dispersion of carbon fibers in aluminum matrix composites presents a significant challenge in manufacturing. This study introduces a novel approach to address this issue through a simple mechanical exfoliation process. Exfoliated fibers were mixed with fine aluminum powder via wet ball milling, ensuring uniform dispersion without the need for dispersion aids. Optical and scanning electron microscopy of the developed composite confirmed excellent fiber dispersion in both the pre-compaction mix and hot-compressed composite. X-ray diffraction analysis revealed a high-quality crystalline structure, while Williamson–Hall plots indicated changes in particle size and reduction in strain with increasing fiber content. Microhardness testing showed an increase in hardness with fiber content, with the highest value of 55.3 VHN observed for the C/Al-5 sample. The study emphasizes the importance of fiber dispersion in enhancing the mechanical properties of these composites, which is crucial for the development of advanced metal matrix composites for various applications.</p>

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Exfoliated Carbon Fibers Dispersion in Aluminum Metal Matrix-Based C/Al Composites

  • 期刊论文

  • 发表日期：

    2025年6月24日

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  • Thakur Sudesh Kumar Raunija,
  • Jatinder Garg,
  • Praveen Kumar

摘要

The effective dispersion of carbon fibers in aluminum matrix composites presents a significant challenge in manufacturing. This study introduces a novel approach to address this issue through a simple mechanical exfoliation process. Exfoliated fibers were mixed with fine aluminum powder via wet ball milling, ensuring uniform dispersion without the need for dispersion aids. Optical and scanning electron microscopy of the developed composite confirmed excellent fiber dispersion in both the pre-compaction mix and hot-compressed composite. X-ray diffraction analysis revealed a high-quality crystalline structure, while Williamson–Hall plots indicated changes in particle size and reduction in strain with increasing fiber content. Microhardness testing showed an increase in hardness with fiber content, with the highest value of 55.3 VHN observed for the C/Al-5 sample. The study emphasizes the importance of fiber dispersion in enhancing the mechanical properties of these composites, which is crucial for the development of advanced metal matrix composites for various applications.