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<p>In this study, copper matrix composites reinforced with graphene (Gr/Cu composites) were fabricated by chemical vapor deposition (CVD) with different in situ growth times (<i>t</i> = 1, 3, 5, 7, 9 min, C<sub>2</sub>H<sub>2</sub> = 12 standard cubic centimeters per minute (sccm)) and acetylene flow rates (C<sub>2</sub>H<sub>2</sub> = 8, 10, 12, 14, 16 sccm, <i>t</i> = 5&#xa0;min). The effects of in situ growth time and acetylene flow rate on the microstructure, microhardness, conductivity and tensile properties were investigated by scanning electron microscopy (SEM), transmission electron microscope (TEM), microhardness tester, eddy current conductivity meter and universal testing machine. The results showed that the homogeneous dispersion of graphene in the copper matrix was effectively achieved by the in situ growth method when moderate amount of acetylene was introduced, and the composites showing a combination of high hardness (60.93HV<sub>0.3</sub>), tensile strength (312.02MPa) and electrical conductivity (108.16%IACS) were fabricated with in situ growth time of 7 minutes and acetylene flow rate of 12 sccm. Proper acetylene flow rate and in situ growth time could effectively improve performance of the copper matrix.</p>

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Effect of In Situ Growth Time and Acetylene Flow Rate on Mechanical and Electrical Properties of Copper Matrix Composites

  • 期刊论文

  • 发表日期：

    2025年4月28日

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  • Lianwang Zhang,
  • Jianfeng Yue,
  • Ming Song,
  • Wei He,
  • Qi Sun,
  • Zhaoyang Wang,
  • Yang Zheng,
  • Wei Niu,
  • Zhenyang Yu

摘要

In this study, copper matrix composites reinforced with graphene (Gr/Cu composites) were fabricated by chemical vapor deposition (CVD) with different in situ growth times (t = 1, 3, 5, 7, 9 min, C2H2 = 12 standard cubic centimeters per minute (sccm)) and acetylene flow rates (C2H2 = 8, 10, 12, 14, 16 sccm, t = 5 min). The effects of in situ growth time and acetylene flow rate on the microstructure, microhardness, conductivity and tensile properties were investigated by scanning electron microscopy (SEM), transmission electron microscope (TEM), microhardness tester, eddy current conductivity meter and universal testing machine. The results showed that the homogeneous dispersion of graphene in the copper matrix was effectively achieved by the in situ growth method when moderate amount of acetylene was introduced, and the composites showing a combination of high hardness (60.93HV0.3), tensile strength (312.02MPa) and electrical conductivity (108.16%IACS) were fabricated with in situ growth time of 7 minutes and acetylene flow rate of 12 sccm. Proper acetylene flow rate and in situ growth time could effectively improve performance of the copper matrix.