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Effect of Titanium Hydride Powder Characteristics and Aluminium Alloy Composition on Foaming

机译：氢化钛粉末特性和铝合金成分对发泡的影响

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摘要

Foaming of Al-1.5%Ca alloy melt was studied as a function of foaming agent powder particle size and foaming agent powder surface filming. The response variables were height of foam and that of dense bottom portion, expansion rate and cell structure. Over the range of foaming agent powder particle size studied (from ＜ 8μm to 75-106 μm), the finest and most uniform cells were obtained when ＜ 8 μm powder was used. Surface filming of the foaming agent powder was shown to result in slower expansion, but treatment-dependent cell structure. Studies were also conducted to explore the viability of foaming commercial purity (CP) Al, Al-3%Mg and Al-2%Mg-1%Li. While all the alloys could be foamed, Al-1.5%Ca foams showed the most well defined cell structure and the largest expansion.
机译：研究了Al-1.5％Ca合金熔体的发泡与发泡剂粉末粒径和发泡剂粉末表面成膜的关系。响应变量是泡沫的高度和密实底部的高度，膨胀率和孔结构。在所研究的发泡剂粉末粒度范围内（从＜8μm到75-106μm），当使用＜8μm粉末时，可获得最细，最均匀的泡孔。发泡剂粉末的表面成膜显示出较慢的膨胀，但取决于处​​理的泡孔结构。还进行了研究以探索发泡商业纯度（CP）Al，Al-3％Mg和Al-2％Mg-1％Li的可行性。尽管所有合金均可发泡，但Al-1.5％Ca泡沫显示出最明确的孔结构和最大的膨胀。

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