Fabrication of Fe-Cu matrix diamond composite by microwave hot pressing sintering
Fabrication of Fe-Cu matrix diamond composite by microwave hot pressing sintering
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微波热压烧结制备Fe-Cu基金刚石复合材料
DOI：
10.1016/j.powtec.2018.06.043
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发表时间：
2018-10-01
影响因子：
5.2
通讯作者：
Ye, Xiaolei
中科院分区：
文献类型：
--
作者：
Hou, Ming;Guo, Shenghui;Ye, Xiaolei
采用微波热压烧结法和常规热压烧结法制备了Fe-Cu预合金金刚石工具钻头。分析了试样的致密化特征、显微组织和力学性能。与CHPS相比，MHPS具有元素分布均匀、烧结时间短、烧结温度低、力学性能好等优点。研究了不同烧结温度对材料力学性能的影响，发现较高的烧结温度有利于材料力学性能的提高。实验结果还表明，样品表现出良好的性能下MHPS。预合金化金属粉末可以在较高的升温速率（30 ℃/min）下加热到设计的烧结温度。在860 ℃下通过MHPS检测到硬度和相对密度也为106.5HRB和96.2%。而固相颗粒的重排是影响相对密度和硬度的决定性因素。讨论了可能的机制。(C)2018 Elsevier B. V.版权所有。
The Fe-Cu pre-alloyed diamond tools drills were fabricated and characterized using microwave hot press sintering (MHPS) and conventional hot press sintering (CHPS). The characteristic of densification, microstructure and mechanical properties of samples were assessed. Compared to the CHPS, the MHPS showed evident advantages, including more uniform element distribution, shorter sintering time, lower sintering temperature and preferable mechanical properties. The influence of different temperature on the mechanical properties has been investigated, revealing that high sintering temperature is benefit for the mechanical properties of samples. Experimental results also indicate that the samples show excellent performance under MHPS. And the pre-alloyed metallic powder could be heated to the designed sintering temperature at a high heating rate (30 degrees C/min). The hardness and relative density were also detected to be 106.5 HRB and 96.2% by MHPS at 860 degrees C. And the rearrangement of solid particles is a determinant factor to impact the relative density and hardness. The possible mechanism was discussed. (C) 2018 Elsevier B.V. All rights reserved.