东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2010, Vol. 31 ›› Issue (6): 820-823.DOI: -

• 论著 • 上一篇    下一篇

混料工艺对SiC_p/Al复合材料SiC颗粒分布均匀性的影响

刘越;王保勇;张雅静;路春宇;   

  1. 东北大学材料与冶金学院;
  • 收稿日期:2013-06-20 修回日期:2013-06-20 出版日期:2010-06-15 发布日期:2013-06-20
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家归国留学人员基金资助项目(2008);;

Effect of mixing processes on SiCp distribution in SiCp/Al composites

Liu, Yue (1); Wang, Bao-Yong (1); Zhang, Ya-Jing (1); Lu, Chun-Yu (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-20 Revised:2013-06-20 Online:2010-06-15 Published:2013-06-20
  • Contact: Liu, Y.
  • About author:-
  • Supported by:
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摘要： 采用元素粉末法制备体积分数为12%的SiCp/2024Al复合材料,利用三维高效混料机混料,研究了混料工艺对SiC颗粒在基体中分布均匀性的影响.实验结果表明:球料比、混料时间和颗粒尺寸对SiC颗粒在基体中的分布均匀性有重要影响;球料比1∶2时,由于输入的能量较低,难于实现SiC颗粒在基体中的均匀分布;球料比5∶1时,随着混料时间的延长,SiC颗粒分布均匀性逐渐提高,达到一定时间后不再提高;当球料比5∶1,混料时间20h时,尺寸为3.5μmSiC颗粒在基体中分布均匀性最好,0.8μmSiC颗粒在基体中的分布则存在团聚现象.

关键词: 混料工艺, SiC/Al, 元素粉末, 三维高效混料机, 分布均匀性

Abstract: The 12% SiCp/2024Al (in volume fraction) composite was prepared by mixing the element powder in a 3-D high-efficiency mixer. The effect of mixing process parameters on the spatial distribution of SiC particles were investigated. The experimental results indicated that the ball/charge weight ratio, mixing time and particle size of SiC affect greatly the distribution of SiC in the matrix of the composite. When the ratio is 1:2, it is difficult to achieve the uniform distribution of SiC particles because of low energy input. When the ratio is 5:1, the distribution uniformity of SiC particles is improved gradually with mixing time but cannot be improved much longer at a certain moment. When the ratio is 5:1 with the mixing time 20h, the 3.5μm SiC particles are the best of uniform distribution in matrix, whereas the 0.8μm SiC particles may form conglomerates in matrix.

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