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Ti3AlC2对PcBN材料显微结构及性能的影响

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

马金明, 肖长江, 陶宏均, 张群飞, 汤黎辉, 曹剑锋, 李远, 周世杰, 唐昱霖, 陈亚超, 栗正新. Ti3AlC2对PcBN材料显微结构及性能的影响[J]. 金刚石与磨料磨具工程, 2024, 44(2): 179-184. doi: 10.13394/j.cnki.jgszz.2023.0048
引用本文: 马金明, 肖长江, 陶宏均, 张群飞, 汤黎辉, 曹剑锋, 李远, 周世杰, 唐昱霖, 陈亚超, 栗正新. Ti3AlC2对PcBN材料显微结构及性能的影响[J]. 金刚石与磨料磨具工程, 2024, 44(2): 179-184. doi: 10.13394/j.cnki.jgszz.2023.0048
MA Jinming, XIAO Changjiang, TAO Hongjun, ZHANG Qunfei, TANG Lihui, CAO Jianfeng, LI Yuan, ZHOU Shijie, TANG Yulin, CHEN Yachao, LI Zhengxin. Effect of Ti3AlC2 content on microstructure and properties of PcBN materials[J]. Diamond & Abrasives Engineering, 2024, 44(2): 179-184. doi: 10.13394/j.cnki.jgszz.2023.0048
Citation: MA Jinming, XIAO Changjiang, TAO Hongjun, ZHANG Qunfei, TANG Lihui, CAO Jianfeng, LI Yuan, ZHOU Shijie, TANG Yulin, CHEN Yachao, LI Zhengxin. Effect of Ti3AlC2 content on microstructure and properties of PcBN materials[J]. Diamond & Abrasives Engineering, 2024, 44(2): 179-184. doi: 10.13394/j.cnki.jgszz.2023.0048

Ti3AlC2对PcBN材料显微结构及性能的影响

doi: 10.13394/j.cnki.jgszz.2023.0048
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(2021KJZX0062)。
详细信息
    作者简介:

    通信作者:栗正新,男,1964年生,教授、硕士生导师。主要研究方向:金刚石功能材料、先进超硬和普通磨料磨具、计算机模拟仿真和磨削技术等。E-mail:lizx012001@163.com

  • 中图分类号: TQ164; TG74

Effect of Ti3AlC2 content on microstructure and properties of PcBN materials

  • 摘要: 以不同质量分数的Ti3AlC2为结合剂,在5.5 GPa、1450 ℃的条件下,制备整体式PcBN复合刀具材料,分析不同质量分数的Ti3AlC2对PcBN刀具材料的物相、显微结构及力学性能的影响。结果表明:Ti3AlC2在高温高压下会完全分解成TiC、Al-Ti合金,并与cBN反应生成AlN、TiB2和TiC0.7N0.3等物相;TiC、AlN、TiB2和TiC0.7N0.3均匀分布在cBN周围并与cBN紧密黏结在一起,从而提升PcBN的力学性能。当Ti3AlC2质量分数为25%时,PcBN的相对密度、抗弯强度、断裂韧性和磨耗比均达到最大值,分别为98.9 %、592 MPa、6.87 MPa·m1/2和7 350;当Ti3AlC2质量分数为20 %时,PcBN的显微硬度达到最大值4 786.7 HV。

     

  • 图  1  Ti3AlC2 形貌

    Figure  1.  Morphology of Ti3AlC2

    图  2  不同Ti3AlC2质量分数时PcBN的XRD图谱

    Figure  2.  XRD patterns of PcBN with different Ti3AlC2 contents

    图  3  不同Ti3AlC2质量分数时的PcBN显微结构

    Figure  3.  Microstructures of PcBN with different Ti3AlC2 mass fractions

    图  4  20%Ti3AlC2 时制备的PcBN面扫描图

    Figure  4.  Surface scan map of PcBN prepared at 20% Ti3AlC2

    图  5  20%Ti3AlC2时制备的PcBN的EDS分析

    Figure  5.  EDS analysis of PcBN prepared at 20% Ti3AlC2

    图  6  不同Ti3AlC2质量分数时的PcBN的相对密度和抗弯强度

    Figure  6.  Relative density and bending strength of PcBN with different Ti3AlC2 mass fractions

    图  7  不同Ti3AlC2质量分数时烧结的PcBN的显微硬度与断裂韧性

    Figure  7.  Microhardness and fracture toughness of sintered PcBN with different Ti3AlC2 contents

    图  8  不同Ti3AlC2质量分数时烧结的PcBN的磨耗比

    Figure  8.  Wear ratios of sintered PcBN with different Ti3AlC2 contents

    表  1  实验配方

    Table  1.   Experimental formula

    编号cBN质量分数
    ω1 / %
    结合剂Ti3AlC2质量分数
    ω2 / %
    18515
    28020
    37525
    47030
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出版历程
  • 收稿日期:  2023-03-03
  • 修回日期:  2023-06-10
  • 录用日期:  2023-06-28
  • 刊出日期:  2024-04-01

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