纯PCBN高压烧结行为与工艺规律

邓雯丽 邓福铭 张鹏 周蕾蕾 席沛尧 马向东

邓雯丽, 邓福铭, 张鹏, 周蕾蕾, 席沛尧, 马向东. 纯PCBN高压烧结行为与工艺规律[J]. 高压物理学报, 2018, 32(2): 023303. doi: 10.11858/gywlxb.20170617
引用本文: 邓雯丽, 邓福铭, 张鹏, 周蕾蕾, 席沛尧, 马向东. 纯PCBN高压烧结行为与工艺规律[J]. 高压物理学报, 2018, 32(2): 023303. doi: 10.11858/gywlxb.20170617
DENG Wenli, DENG Fuming, ZHANG Peng, ZHOU Leilei, XI Peiyao, MA Xiangdong. Sintering Behavior and Technical Rule of Pure PCBN Synthesized under High Pressure[J]. Chinese Journal of High Pressure Physics, 2018, 32(2): 023303. doi: 10.11858/gywlxb.20170617
Citation: DENG Wenli, DENG Fuming, ZHANG Peng, ZHOU Leilei, XI Peiyao, MA Xiangdong. Sintering Behavior and Technical Rule of Pure PCBN Synthesized under High Pressure[J]. Chinese Journal of High Pressure Physics, 2018, 32(2): 023303. doi: 10.11858/gywlxb.20170617

纯PCBN高压烧结行为与工艺规律

doi: 10.11858/gywlxb.20170617
基金项目: 

高等学校博士学科点专项科研基金 20120023110016

北京市自然科学基金与北京市科学技术研究院联合基金 L150012

国家自然科学基金 51172278

详细信息
    作者简介:

    邓雯丽(1990—),女,博士研究生,主要从事聚晶立方氮化硼超硬复合材料研究.E-mail:393454753@qq.com

    通讯作者:

    邓福铭(1963—), 男, 博士, 教授, 主要从事金刚石、立方氮化硼及其他超硬复合材料研究.E-mail:dfm@cumtb.edu.cn

  • 中图分类号: O521.2;O521.9;TG74

Sintering Behavior and Technical Rule of Pure PCBN Synthesized under High Pressure

  • 摘要: 采用粒度为10 μm的纯cBN微粉在不同的高压烧结工艺参数(烧结压力、温度和时间)下制备了纯聚晶立方氮化硼(PCBN)烧结体。利用扫描电镜观察了PCBN烧结体的微结构, 并测试了其耐磨性和抗压强度, 进而讨论了压力、温度和烧结时间对纯PCBN烧结体性能的影响规律。结果表明:对纯PCBN烧结体性能影响最大的因素是烧结压力, 其次是烧结温度和时间; 在本实验条件下, 当压力为9 GPa、温度为1 700 ℃和烧结时间为240 s时, 高压烧结得到的纯PCBN烧结体样品性能最优, 其磨耗比为10 200, 抗压强度为2.52 GPa。

     

  • 图  不同烧结温度下所得纯PCBN烧结体的磨耗比和抗压强度

    Figure  1.  Wear ratio and compressive strength of sintered pure PCBN samples at different sintering temperatures

    图  不同烧结温度下纯PCBN烧结体的SEM形貌照片:(a) 1 500 ℃, (b) 1 700 ℃

    Figure  2.  SEM images of the pure PCBN sintered bodies at different temperatures:(a) 1 500 ℃, (b) 1 700 ℃

    图  不同烧结时间下所得纯PCBN烧结体的磨耗比和抗压强度

    Figure  3.  Wear ratio and compressive strength of sintered pure PCBN samples at different sintering times

    图  不同烧结时间下纯PCBN烧结体的SEM形貌照片:(a) 240 s, (b) 270 s

    Figure  4.  SEM images of the pure PCBN sintered bodies at different sintering times:(a) 240 s, (b) 270 s

    图  不同烧结压力下所得纯PCBN烧结体的磨耗比和抗压强度

    Figure  5.  Wear ratio and compressive strength of sintered pure PCBN samples at different sintering pressures

    图  不同烧结压力下纯PCBN烧结体的XRD图谱

    Figure  6.  XRD spectra of the pure PCBN sintered bodies at different sintering pressures

    表  1  纯PCBN高压烧结实验设计方案与测试结果

    Table  1.   Design of the sintering experiment and measurement results of sintered pure PCBN samples

    No. p/GPa T/℃ t/s Q S/GPa
    1 9 1 500 240 4 560 1.46
    2 9 1 600 240 5 390 1.68
    3 9 1 800 240 8 370 2.41
    4 9 1 700 180 5 050 1.55
    5 9 1 700 210 6 390 1.68
    6 9 1 700 270 9 620 2.46
    7 6 1 700 240 1 030 0.95
    8 7 1 700 240 4 760 1.78
    9 8 1 700 240 7 570 2.36
    10 9 1 700 240 10 200 2.52
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出版历程
  • 收稿日期:  2017-07-17
  • 修回日期:  2017-07-23

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