B-C-N-Ti四元超硬复合材料的高压烧结

黄鸿东 于晓辉 贺端威

黄鸿东, 于晓辉, 贺端威. B-C-N-Ti四元超硬复合材料的高压烧结[J]. 高压物理学报. doi: 10.11858/gywlxb.20240769
引用本文: 黄鸿东, 于晓辉, 贺端威. B-C-N-Ti四元超硬复合材料的高压烧结[J]. 高压物理学报. doi: 10.11858/gywlxb.20240769
HUANG Hongdong, YU Xiaohui, HE Duanwei. High Pressure Sintering of B-C-N-Ti Quaternary Superhard Composites[J]. Chinese Journal of High Pressure Physics. doi: 10.11858/gywlxb.20240769
Citation: HUANG Hongdong, YU Xiaohui, HE Duanwei. High Pressure Sintering of B-C-N-Ti Quaternary Superhard Composites[J]. Chinese Journal of High Pressure Physics. doi: 10.11858/gywlxb.20240769

B-C-N-Ti四元超硬复合材料的高压烧结

doi: 10.11858/gywlxb.20240769
基金项目: 国家重点研发计划(2023YFA1406200)
详细信息
    作者简介:

    黄鸿东(1997-),男,硕士研究生,主要从事高压下超硬材料的合成研究. E-mail:hongdonghuangsss@163.com

    通讯作者:

    于晓辉(1981-),男,博士,研究员,主要从事高压物理及材料研究. E-mail:yuxh@iphy.ac.cn

    贺端威(1969-),男,博士,教授,主要从事高压物理、大腔体静高压技术以及超硬材料研究. E-mail:duanweihe@scu.edu.cn

  • 中图分类号: O521.3; O521.2

High Pressure Sintering of B-C-N-Ti Quaternary Superhard Composites

  • 摘要: 以金刚石、立方氮化硼(cBN)和钛(Ti)为初始材料,通过高温高压反应烧结制备了B-C-N-Ti四元超硬复合材料。结果表明:在高温高压下,Ti与金刚石及cBN反应生成TiC0.7N0.3和TiB2;TiC0.7N0.3作为黏结相以键合金刚石和cBN晶粒,适量Ti的加入可以有效地提高烧结体的韧性;反应生成的TiC0.7N0.3和TiB2等陶瓷相以及cBN对金刚石晶粒的包裹提高了烧结体的抗氧化性。当金刚石、cBN和Ti的摩尔比为2∶1∶0.10时,在压力为12 GPa、温度为2000℃、保温5 min的条件下得到的烧结样品性能较好,其维氏硬度达到 (49.0±1.2) GPa,韧性为(14.2±0.6) MPa·m1/2,空气氛围下的起始氧化温度为921 ℃。

     

  • 图  不同Ti含量下金刚石-Ti-cBN烧结样品(12 GPa、2000 ℃)的XRD谱

    Figure  1.  XRD patterns of diamond-Ti-cBN composites sintered at 12 GPa and 2000 ℃ with different contents of Ti

    图  金刚石-Ti-cBN烧结样品断裂面的SEM图像

    Figure  2.  SEM images of the fracture surfaces of diamond-Ti-cBN sintered composites

    图  BND2Ti0.10 的SEM图像以及B、C、N和 Ti 元素的EDS图谱

    Figure  3.  SEM image and the corresponding EDS mapping of B, C, N, and Ti element for BND2Ti0.10 specimen

    图  不同Ti含量的金刚石-Ti-cBN烧结样品的维氏硬度和韧性

    Figure  4.  Vickers hardness and fracture toughness of diamond-Ti-cBN specimens with different contents of Ti

    图  BND2Ti0.10 样品在49 N加载下的压痕SEM图像

    Figure  5.  SEM images of the Vickers hardness indentation for BND2Ti0.10 specimens at the applied load of 49 N

    图  空气氛围下加热至1400 ℃的BND2Ti0.10烧结样品的TG-DSC曲线

    Figure  6.  TG-DSC curve of BND2Ti0.10 specimen to 1400 ℃ under air condition

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出版历程
  • 收稿日期:  2024-03-29
  • 修回日期:  2024-04-25
  • 网络出版日期:  2024-07-08

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