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SiC体积分数对铜基复合材料性能的影响

蔡佳宁 樊子民 乐晨 李鑫 唐明强 赵放

蔡佳宁, 樊子民, 乐晨, 李鑫, 唐明强, 赵放. SiC体积分数对铜基复合材料性能的影响[J]. 金刚石与磨料磨具工程, 2023, 43(6): 743-749. doi: 10.13394/j.cnki.jgszz.2022.0183
引用本文: 蔡佳宁, 樊子民, 乐晨, 李鑫, 唐明强, 赵放. SiC体积分数对铜基复合材料性能的影响[J]. 金刚石与磨料磨具工程, 2023, 43(6): 743-749. doi: 10.13394/j.cnki.jgszz.2022.0183
CAI Jianing, FAN Zimin, LE Chen, LI Xin, TANG Mingqiang, ZHAO Fang. Effect of SiC content on properties of copper matrix composites[J]. Diamond & Abrasives Engineering, 2023, 43(6): 743-749. doi: 10.13394/j.cnki.jgszz.2022.0183
Citation: CAI Jianing, FAN Zimin, LE Chen, LI Xin, TANG Mingqiang, ZHAO Fang. Effect of SiC content on properties of copper matrix composites[J]. Diamond & Abrasives Engineering, 2023, 43(6): 743-749. doi: 10.13394/j.cnki.jgszz.2022.0183

SiC体积分数对铜基复合材料性能的影响

doi: 10.13394/j.cnki.jgszz.2022.0183
详细信息
    作者简介:

    乐晨,男,1986年生,中级工程师。主要研究方向:金属制粉研究。E-mail:metallc@sina.com

    通讯作者:

    樊子民,男,1977年生,副教授。主要研究方向:先进陶瓷及复合材料。E-mail:fanzimin@126.com

  • 中图分类号: TB333

Effect of SiC content on properties of copper matrix composites

  • 摘要: 采用热压粉末冶金法引入Al和Mg元素制备SiC/Cu复合材料,研究SiC体积分数对SiC/Cu复合材料性能的影响。采用X射线衍射、阿基米德排水法、三点弯曲法和扫描电镜分析复合材料样品的物相组成、相对密度、力学性能及微观形貌,并测定其导热系数和热膨胀系数,用ROM混合定律和Turner模型预测复合材料的热膨胀系数。结果表明:试样基体中生成了AlCuMg相,强度大幅增加,且以混合型断裂为主;当SiC体积分数较低时,SiC颗粒在基体中分散较均匀。当SiC体积分数为35%时,SiC/Cu复合材料的致密度、抗弯强度、导热系数和热膨胀系数分别为98.81%、478 MPa、254.76 W/(m·K)和11.84 × 10−6 /K。随着SiC体积分数的增加,SiC颗粒团聚较严重,复合材料的致密度、抗弯强度、导热系数和热膨胀系数随之降低,其硬度呈先增加后降低的趋势,在SiC体积分数为45%时达到最大值110 HRB。Turner模型的预测值与复合材料实测值最为接近。

     

  • 图  1  不同SiC体积分数下烧结样品的XRD图谱

    Figure  1.  XRD spectra of sintered samples with different SiC volume fractions

    图  2  不同SiC体积分数的SiCp/Cu复合材料的硬度和抗弯强度

    Figure  2.  Hardness and flexural strength of SiCp/Cu composites with different SiC contents

    图  3  不同SiC体积分数的SiCp/Cu复合材料导热系数

    Figure  3.  Thermal conductivity of SiCp/Cu composites with different SiC contents

    图  4  不同SiC体积分数的SiCp/Cu复合材料热膨胀系数的预测值和实测值

    Figure  4.  Predicted and measured thermal expansion coefficients of SiCp/Cu composites with different SiC contents

    图  5  不同SiC体积分数下样品的断口形貌

    Figure  5.  Fracture morphologies of samples with different SiC volume fractions

    图  6  SiC体积分数为45%样品的SEM和EDS

    Figure  6.  SEM and EDS of samples with SiC content of 45%

    表  1  试样的密度和致密度

    Table  1.   Density and density of SiCp/Cu composites

    SiC体积
    分数 ω / %
    理论密度
    ρ / (g·cm−3)
    实测密度
    ρ / (g·cm−3)
    致密度
    Ρ / %
    356.065.9998.81
    405.785.7098.56
    455.525.2695.24
    505.224.7891.52
    554.964.2385.32
    604.683.7680.32
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-11-03
  • 修回日期:  2023-03-18
  • 录用日期:  2023-04-07
  • 刊出日期:  2023-12-01

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