کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
595915 | 1454028 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Experiments on metallic foams under gravity and microgravity Experiments on metallic foams under gravity and microgravity](/preview/png/595915.png)
Aluminium foams were created on ground and under microgravity conditions and were allowed to evolve. The entire foaming process was monitored by in situ X-ray radioscopy, allowing for flow and drainage of the liquid of the foam to be monitored and quantified. A foam with a known low stability level was used to enhance the effects of microgravity. The flow of metal out of the foam under gravity during the 1.8 g phase was found to be fast, indicating a mobile liquid. The density profile evolved in a similar way as in aqueous foams. Reentry of the liquid melt into the foam was also observed. Under microgravity the foam re-established a uniform density and pore size distribution after nearly complete imbibition of the liquid. This also shows that the liquid is mobile.
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 344, Issues 1–3, 20 July 2009, Pages 101–106