Microwave hot press sintering: New attempt for the fabrication of Fe–Cu pre-alloyed matrix in super-hard material
Microwave hot press sintering: New attempt for the fabrication of Fe–Cu pre-alloyed matrix in super-hard material
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微波热压烧结：超硬材料Fe-Cu预合金基体制备的新尝试
DOI：
10.1016/j.powtec.2019.08.055
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发表时间：
2019-11
影响因子：
5.2
通讯作者：
Longtao Hu
中科院分区：
文献类型：
--
作者：
Ming Hou;Shenghui Guo;Li Yang;Ehsan Ullah;Jiyun Gao;Tu Hu;Xiaolei Ye;Longtao Hu
采用微波热压烧结（MHPS）方法，在较低的烧结温度下制备了超硬金刚石钻头。用扫描电镜分析其微观结构。对试样进行了抗弯强度、硬度、相对密度、压缩和拉伸试验等性能表征。利用拉曼光谱分析了样品中金刚石的纯度。结果表明，MHPS法应用于金刚石钻头的制备，具有烧结时间短、烧结温度低等突出优点，在860 °C下制备的金刚石钻头具有优异的性能。硬度、相对密度和抗弯强度分别为106.6HRB、97.6%和895.8MPa。因此，进行反应动力学研究以分析反应机理。并对MHPS的烧结机理进行了探讨。本文的工作为MHPS工艺制备金刚石工具提供了理论依据。
Super-hard diamond drill bits were prepared with microwave hot press sintering (MHPS) method at low sintering temperature. The micro-structures were analyzed using SEM. The samples were characterized for their properties such as bending strength, hardness, relative density and compression and tensile test. The purity of the diamond in samples was investigated by Raman spectroscopy. The results display that when MHPS method is applied to the manufacture of diamond drill bits, it has prominent advantages such as shorter sintering time, lower sintering temperature et al. And the samples prepared with MHPS at 860 °C show excellent performance. The values of hardness, relative density and bending strength are 106.6 HRB, 97.6% and 895.8 MPa respectively. Thus, a reaction kinetic study was performed to analyze reaction mechanism. And a potential sintering mechanism of MHPS is discussed. This work will provide a theoretical basis for the preparation of diamond tools through MHPS process.
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