东北大学学报(自然科学版) ›› 2007, Vol. 28 ›› Issue (8): 1163-1166.DOI: -

• 论著 • 上一篇    下一篇

粉体颗粒粒度对粉末冶金法制备泡沫铝材料的影响

郭志强;姚广春;尉海军;李红斌;   

  1. 东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2007-08-15 发布日期:2013-06-24
  • 通讯作者: Guo, Z.-Q.
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2004AA33G060)

Influences of powder particle size on preparation of foamed aluminum by powder compact foaming method

Guo, Zhi-Qiang (1); Yao, Guang-Chun (1); Yu, Hai-Jun (1); Li, Hong-Bin (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2007-08-15 Published:2013-06-24
  • Contact: Guo, Z.-Q.
  • About author:-
  • Supported by:
    -

摘要: 采用自制的Al-Si合金粉末为原料,将粒度为d<74μm,74μm

关键词: 粉末冶金, 泡沫铝, TiH2, 粒度, 密度

Abstract: With the powdered Al-Si alloy taken as raw material to prepare foam aluminum, the powdered alloy was classified into three powder particle sizes, i.e., d < 74 μm, 74 μm > d < 147 μm and 147 μm < d < 295 μm, and each of them was blended with the foaming agent TiH2 separately. Then they were all pressed into blanks for foaming experiments. As shown in experimental results, the occurrences of TiH2 agglomeration decreases as the powder particle size decrease and, gradually, the agglomerated particles become linear even point-like ones in blank. When the powder particle size decreases to d < 74 μm, all particles present point-like and are distributed uniformly in blank. In this way the high-quality foam aluminum can be obtained with low density, high porosity, thin pore walls, uniformly distributed pores and perfect foam growth.

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