氢化锆熔体发泡法制备小孔径泡沫铝.pdf.pdf

文档介绍：第 20 卷第 1 期中国有色金属学报 2010 年 1 月
The Chinese Journal of Nonferrous Metals Jan. 2010
文章编号:1004-0609(2010)01-0143-06

氢化锆熔体发泡法制备小孔径泡沫铝

李大武 1,孙挺 1,姚广春 2,张小明 2,李杰 1

(1. 东北大学理学院,沈阳 110004;
2. 东北大学材料与冶金学院,沈阳 110004)

摘要:以 ZrH2 为发泡剂,采用熔体发泡法制备铝基小孔径泡沫铝,分析其制备过程及影响孔结构的因素;优
化实验室制备泡沫铝的工艺条件;借助图形分析方法表征泡沫铝的孔径分布,并与 TiH2 制备的泡沫铝进行了对比;
采用改进座滴装置研究铝合金与氢化物的润湿行为。结果表明:ZrH2 较适合制备小孔径泡沫铝;优化工艺条件为:
Al 650 g,增粘剂 Ca 的加入量 %,发泡剂 ZrH2 的加入量 %,发泡温度 680 ℃,搅拌时间 min,保温时
间 min;制备的泡沫铝孔径均匀,平均孔径小于 mm;ZrH2 在铝合金中的润湿特点是导致泡沫铝孔径较小
的主要原因。
关键词:泡沫铝;熔体发泡法;氢化锆;润湿性
中图分类号:TG 文献标识码:A

Preparation of foam aluminum with small pores by
melt-based route of ZrH2

LI Da-wu1, SUN Ting1, YAO Guang-chun2, ZHANG Xiao-ming2, LI Jie1

(1. College of Sciences, Northeastern University, Shenyang 110004, China;
2. School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China)

Abstract: Foam aluminum with small pore diameters was prepared by the melt-based route using ZrH2 as foaming agent.
The relationship between the foaming process parameters and the cell structures of foam aluminum was studied. The
foaming process conditions were optimized. The pore diameter distribution of the foam aluminum was characterized by
the graphical analysis method and the foaming agent TiH2 monly used for parison. The improved sessile