JOURNAL OF LIGHT INDUSTRY

CN 41-1437/TS  ISSN 2096-1553

烧结温度对硬质合金梯度形成及晶粒生长的影响

周向葵 ,  李莹 ,  朱雪杨 ,  刘建秀 ,  高红霞

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周向葵, 李莹, 朱雪杨, 等. 烧结温度对硬质合金梯度形成及晶粒生长的影响[J]. 轻工学报, 2020, 35(5): 55-60. doi: 10.12187/2020.05.008
引用本文: 周向葵, 李莹, 朱雪杨, 等. 烧结温度对硬质合金梯度形成及晶粒生长的影响[J]. 轻工学报, 2020, 35(5): 55-60. doi: 10.12187/2020.05.008
shu
ZHOU Xiangkui, LI Ying, ZHU Xueyang, et al. Effect of sintering temperature on the gradient formation and grain growth of the hardmetals[J]. Journal of Light Industry, 2020, 35(5): 55-60. doi: 10.12187/2020.05.008
Citation: ZHOU Xiangkui, LI Ying, ZHU Xueyang, et al. Effect of sintering temperature on the gradient formation and grain growth of the hardmetals[J]. Journal of Light Industry, 2020, 35(5): 55-60. doi: 10.12187/2020.05.008
shu

烧结温度对硬质合金梯度形成及晶粒生长的影响

  • 1. 郑州轻工业大学 河南省机械装备智能制造重点实验室, 河南 郑州 450002;

  • 2. 上海理工大学 能源与动力工程学院, 上海 200093

    • 作者简介: 周向葵(1986-),男,河南省平顶山市人,郑州轻工业大学讲师,博士,主要研究方向为硬质合金.;

  • 基金项目: 河南省高等学校重点科研计划项目（20A430034）；郑州轻工业大学博士启动基金资助项目（2016BSJJ011）

  • 中图分类号: TG146.4

Effect of sintering temperature on the gradient formation and grain growth of the hardmetals

  • 1. He'nan Key Laboratory of Intelligent Manufacturing of Mechanical Equipment, Zhengzhou University of Light Industry, Zhengzhou 450002, China;

  • 2. School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

  • Received Date: 2020-04-30

    CLC number: TG146.4

  • 摘要: 以WC-10% Co硬质合金为研究对象，通过添加立方碳氮化物Ti（C，N）和（W，Ti）C，采用两步法烧结对硬质合金进行热处理，研究烧结温度对其梯度形成和晶粒生长的影响.结果表明，超细WC粉末经过真空预烧结后，合金的表层和芯部都均匀分布着硬质相WC、粘结相Co和立方相，且出现少量异常长大的WC晶粒；经过1460℃梯度烧结热处理后，合金表面无立方相，梯度层的厚度可达55 μm，WC晶粒平均尺寸约为1.23 μm，尤其是异常长大的WC晶粒数量和尺寸都显著增加.
    Abstract: Taking WC-10%Co hardmetals as the research object, by adding cubic carbonitrides Ti(C,N) and (W,Ti)C, the hardmetals was heat treated by two-step sintering method, and the effects of sintering temperature on the gradient formation and grain growth were studied. The results showed that after the ultrafine WC powder was vacuum pre-sintered, the surface layer and core of the alloy were evenly distributed with hard phase WC, binder phase Co and cubic phase, and a small amount of abnormally grown WC grains appeared. After 1460℃ gradient sintering heat treatment, there was no cubic phase on the surface of the alloy, the thickness of the gradient layer could reach 55 μm and the average size of WC grains was about 1.23 μm, especially the number and size of abnormally grown WC grains were significantly increased.
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周向葵, 李莹, 朱雪杨, 等. 烧结温度对硬质合金梯度形成及晶粒生长的影响[J]. 轻工学报, 2020, 35(5): 55-60. doi: 10.12187/2020.05.008
引用本文: 周向葵, 李莹, 朱雪杨, 等. 烧结温度对硬质合金梯度形成及晶粒生长的影响[J]. 轻工学报, 2020, 35(5): 55-60. doi: 10.12187/2020.05.008
shu
ZHOU Xiangkui, LI Ying, ZHU Xueyang, et al. Effect of sintering temperature on the gradient formation and grain growth of the hardmetals[J]. Journal of Light Industry, 2020, 35(5): 55-60. doi: 10.12187/2020.05.008
Citation: ZHOU Xiangkui, LI Ying, ZHU Xueyang, et al. Effect of sintering temperature on the gradient formation and grain growth of the hardmetals[J]. Journal of Light Industry, 2020, 35(5): 55-60. doi: 10.12187/2020.05.008
shu

烧结温度对硬质合金梯度形成及晶粒生长的影响

    作者简介:周向葵(1986-),男,河南省平顶山市人,郑州轻工业大学讲师,博士,主要研究方向为硬质合金.
  • 1. 郑州轻工业大学 河南省机械装备智能制造重点实验室, 河南 郑州 450002;
  • 2. 上海理工大学 能源与动力工程学院, 上海 200093
  • 收稿日期: 2020-04-30
基金项目:  河南省高等学校重点科研计划项目（20A430034）；郑州轻工业大学博士启动基金资助项目（2016BSJJ011）

摘要: 以WC-10% Co硬质合金为研究对象，通过添加立方碳氮化物Ti（C，N）和（W，Ti）C，采用两步法烧结对硬质合金进行热处理，研究烧结温度对其梯度形成和晶粒生长的影响.结果表明，超细WC粉末经过真空预烧结后，合金的表层和芯部都均匀分布着硬质相WC、粘结相Co和立方相，且出现少量异常长大的WC晶粒；经过1460℃梯度烧结热处理后，合金表面无立方相，梯度层的厚度可达55 μm，WC晶粒平均尺寸约为1.23 μm，尤其是异常长大的WC晶粒数量和尺寸都显著增加.

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