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<p>Carbon nanotube (CNT) reinforced aluminum matrix composites (CNT/Al) featuring distinct matrix alloys were crafted utilizing a synergistic approach that integrated high energy ball milling with powder metallurgy techniques. The influence of matrix alloy composition on the tribological behavior of CNT/Al composites was investigated. CNT/2009Al composite demonstrates lower friction coefficients and wear rates than CNT/6061Al, while also significantly reducing the wear rate of its counterpart under varying loads by generating an extensive mechanical mixture layer (MML) on its worn surface, while simultaneously hindering the formation of MML on the worn counterface. But for CNT/6061Al, the spalling of substantial material fragments during wear processes led to pronounced delamination wear, particularly under high load. This underscores the superior suitability of high-strength and tough aluminum alloys as matrices for composites, particularly tailored for applications that necessitate components exhibiting wear resistance.</p>

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Tribological behavior of carbon nanotube reinforced aluminum matrix composites with varying matrix alloys

  • 期刊论文

  • 发表日期：

    2025年3月12日

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  • Xiaonan Li,
  • Yiou Liao,
  • Kai Ma,
  • Yuning Zan,
  • Zhenyu Liu,
  • Bolv Xiao,
  • Zongyi Ma

摘要

Carbon nanotube (CNT) reinforced aluminum matrix composites (CNT/Al) featuring distinct matrix alloys were crafted utilizing a synergistic approach that integrated high energy ball milling with powder metallurgy techniques. The influence of matrix alloy composition on the tribological behavior of CNT/Al composites was investigated. CNT/2009Al composite demonstrates lower friction coefficients and wear rates than CNT/6061Al, while also significantly reducing the wear rate of its counterpart under varying loads by generating an extensive mechanical mixture layer (MML) on its worn surface, while simultaneously hindering the formation of MML on the worn counterface. But for CNT/6061Al, the spalling of substantial material fragments during wear processes led to pronounced delamination wear, particularly under high load. This underscores the superior suitability of high-strength and tough aluminum alloys as matrices for composites, particularly tailored for applications that necessitate components exhibiting wear resistance.