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碳纳米管对混合粒径PcBN复合材料性能的影响

肖长江 马金明 陶宏均 张群飞 曹剑锋 李远 周世杰 唐昱霖 陈亚超 栗正新 董清妍

肖长江, 马金明, 陶宏均, 张群飞, 曹剑锋, 李远, 周世杰, 唐昱霖, 陈亚超, 栗正新, 董清妍. 碳纳米管对混合粒径PcBN复合材料性能的影响[J]. 金刚石与磨料磨具工程, 2024, 44(2): 193-198. doi: 10.13394/j.cnki.jgszz.2023.0093
引用本文: 肖长江, 马金明, 陶宏均, 张群飞, 曹剑锋, 李远, 周世杰, 唐昱霖, 陈亚超, 栗正新, 董清妍. 碳纳米管对混合粒径PcBN复合材料性能的影响[J]. 金刚石与磨料磨具工程, 2024, 44(2): 193-198. doi: 10.13394/j.cnki.jgszz.2023.0093
XIAO Changjiang, MA Jinming, TAO Hongjun, ZHANG Qunfei, CAO Jianfeng, LI Yuan, ZHOU Shijie, TANG Yulin, CHEN Yachao, LI Zhengxin, DONG Qingyan. Effect of CNTs on properties of PcBN composites with mixed particle size[J]. Diamond & Abrasives Engineering, 2024, 44(2): 193-198. doi: 10.13394/j.cnki.jgszz.2023.0093
Citation: XIAO Changjiang, MA Jinming, TAO Hongjun, ZHANG Qunfei, CAO Jianfeng, LI Yuan, ZHOU Shijie, TANG Yulin, CHEN Yachao, LI Zhengxin, DONG Qingyan. Effect of CNTs on properties of PcBN composites with mixed particle size[J]. Diamond & Abrasives Engineering, 2024, 44(2): 193-198. doi: 10.13394/j.cnki.jgszz.2023.0093

碳纳米管对混合粒径PcBN复合材料性能的影响

doi: 10.13394/j.cnki.jgszz.2023.0093
基金项目: 工业和信息化部科技高质量发展项目(203ZS20230005);河南省重大科技专项(221100230100);河南省2024年重点研发专项“新能源汽车关键零部件用高端系列超硬磨具研制及产业化”;郑州市重大科技专项项目(2021KJZX0062)。
详细信息
    作者简介:

    肖长江,男,1969 年生,副教授。主要研究方向:超硬材料的制备与研发。E-mail:cjxiao@haut.edu.cn

    通讯作者:

    栗正新,男,1964 年生,教授。主要研究方向:超硬材料的制备与研发。E-mail:lizx012001@163.com

  • 中图分类号: TQ164; TG74

Effect of CNTs on properties of PcBN composites with mixed particle size

  • 摘要: 为提高高温高压制备的聚晶立方氮化硼(PcBN)复合材料的性能,以颗粒尺寸分别为0~0.5 μm和0.5~1.0 μm的混合粒径立方氮化硼(cBN)为原材料,Al-Ti-Al2O3为结合剂,加入不同质量分数的碳纳米管,在高温高压条件下烧结制备PcBN复合材料,研究碳纳米管质量分数对PcBN复合材料结构和性能的影响。结果表明:添加碳纳米管后,PcBN和碳纳米管间没有发生化学反应,碳纳米管以增强体的形式存在于复合材料内部;复合材料较致密,碳纳米管的添加使PcBN的相对密度先增大后减小。当碳纳米管添加质量分数为1.5%时,PcBN的相对密度有最大值97.9%,同时 PcBN有最大的显微硬度和断裂韧性,分别为3892 HV和6.82 MPa·m1/2;当碳纳米管的添加质量分数为1.0%时,PcBN有最大的抗弯强度和磨耗比,分别为584 MPa和6873。碳纳米管拔出和桥连作用提高了PcBN复合材料的力学性能。

     

  • 图  1  PcBN高温高压制备流程

    Figure  1.  Preparation process of PcBN under high temperature and high pressure

    图  2  PcBN的XRD图谱

    Figure  2.  XRD patterns of PcBN

    图  3  PcBN的断面微观形貌

    Figure  3.  Microscopic morphologies of the fracture surfaces of PcBN

    图  4  PcBN样品的相对密度和抗弯强度

    Figure  4.  Relative densities and bending strengths of PcBN samples

    图  5  PcBN样品的显微硬度和断裂韧性

    Figure  5.  Microhardness and fracture toughness of PcBN samples

    图  6  PcBN样品的磨耗比

    Figure  6.  Wear ratios of PcBN samples

    表  1  实验配方

    Table  1.   Experimental formula

    编号cBN质量分数
    ω1 / %
    结合剂质量分数
    ω2 / %
    CNTs质量分数
    ω3 / %
    170.030.00
    269.530.00.5
    369.030.01.0
    468.530.01.5
    568.030.02.0
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-04-21
  • 修回日期:  2023-07-17
  • 刊出日期:  2024-04-01

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