大块高纯Fe3C的高温高压合成

杨俊 杨刚 陈星 赵彬 冷春蔚 刘勋 黄海军

杨俊, 杨刚, 陈星, 赵彬, 冷春蔚, 刘勋, 黄海军. 大块高纯Fe3C的高温高压合成[J]. 高压物理学报, 2019, 33(4): 043302. doi: 10.11858/gywlxb.20190715
引用本文: 杨俊, 杨刚, 陈星, 赵彬, 冷春蔚, 刘勋, 黄海军. 大块高纯Fe3C的高温高压合成[J]. 高压物理学报, 2019, 33(4): 043302. doi: 10.11858/gywlxb.20190715
YANG Jun, YANG Gang, CHEN Xing, ZHAO Bin, LENG Chunwei, LIU Xun, HUANG Haijun. Synthesis of Pure Bulk Fe3C under High Temperature and High Pressure[J]. Chinese Journal of High Pressure Physics, 2019, 33(4): 043302. doi: 10.11858/gywlxb.20190715
Citation: YANG Jun, YANG Gang, CHEN Xing, ZHAO Bin, LENG Chunwei, LIU Xun, HUANG Haijun. Synthesis of Pure Bulk Fe3C under High Temperature and High Pressure[J]. Chinese Journal of High Pressure Physics, 2019, 33(4): 043302. doi: 10.11858/gywlxb.20190715

大块高纯Fe3C的高温高压合成

doi: 10.11858/gywlxb.20190715
基金项目: 国家自然科学基金(41874103)
详细信息
    作者简介:

    杨 俊(1994-),男,硕士研究生,主要从事高压物理研究. E-mail:18207241437@163.com

    通讯作者:

    黄海军(1976-),男,博士,教授,主要从事高压物理与地球物理研究. E-mail:hjhuang@whut.edu.cn

  • 中图分类号: O521.3; P311

Synthesis of Pure Bulk Fe3C under High Temperature and High Pressure

  • 摘要: Fe3C(渗碳体)是一种用途广泛、力学和磁学性能优良的材料,因而其制备方法一直受到人们的关注。通过高温高压下铁和碳的固相反应,成功制备出大块、致密、高纯的Fe3C样品,探索了原料种类、颗粒大小、合成温度、合成压力、保温时间等因素对烧结样品的影响。结果表明:当Fe粉粒径为9 $ {\text{μ}}{\rm{m}}$,石墨粒径为1.3 $ {\text{μ}}{\rm{m}}$,在4 GPa、1000 ℃条件下烧结的Fe3C最为致密。

     

  • 图  Fe3C的晶体结构

    Figure  1.  Crystal structure of cementite

    图  样品组装示意图

    Figure  2.  Schematic of sample assembly

    图  烧结工艺曲线

    Figure  3.  Sintering process curve

    图  烧结样品的XRD谱

    Figure  4.  XRD patterns of sintered samples

    图  样品的背散射电子图和能谱分析图

    Figure  5.  Backscattered electron map and energy spectrum analysis of the sample

    图  碳的${{K_{\text{α}}}}$峰值计数率随碳质量分数的变化(标准样品Fe3C和样品4中C的质量分数分别为(6.67±0.01)%和(6.58±0.01)%)

    Figure  6.  The ${{K_{\text{α}}}}$ peak count rate of carbon varies with carbon mass fraction (The mass fraction of C in the standard sample Fe3C and Sample 4 are (6.67±0.01) % and (6.58±0.01)%, respectively.)

    图  Fe3C的横波声速(a)和纵波声速(b)的超声测量结果

    Figure  7.  (a) Shear wave and (b) compressional wave of Fe3C measured using ultrasonic equipment

    图  烧结样品的SEM图像

    Figure  8.  SEM image of sintered sample

    图  Fe3C的磁滞回线

    Figure  9.  Magnetic hysteresis loop diagram of Fe3C

    表  1  Fe3C原料及烧结参数

    Table  1.   Fe3C raw material and sintering parameters

    No.dFe/$ {\text{μ}}{\rm{m}}$dC/$ {\text{μ}}{\rm{m}}$T/℃t/minp/GPaProductDensity/(g·cm–3)
    114974 (Acticarbon) 800104Fe3C6.869
    21491.3 (Graphite) 800104Fe-C
    391.3 (Graphite) 800104Fe-C
    491.3 (Graphite)1000104Fe3C7.533
    50.031.3 (Graphite)1000104Fe3C6.931
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出版历程
  • 收稿日期:  2019-01-18
  • 修回日期:  2019-03-26

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