Aluminium foam with homogeneous, sub-millimetre bubbles. Production via gas injection and investigation of the stabilisation mechanisms

在这个项目中，我们希望开发一种通过气体注入生产具有均匀孔径分布的铝基泡沫的工艺。由于温度、合金、颗粒的种类、数量和形态以及气体气氛中的氧化物含量等多种因素起着重要的作用，因此我们将对它们的影响进行系统的研究。这些研究在该计划中有更详细的描述。另一个目标是将单一薄膜可以用更少或不含颗粒稳定的知识转移到泡沫中。如果成功，不仅可以改善加工和回收，而且可以降低成本，因为陶瓷颗粒增强是昂贵的。这将有助于推动金属泡沫的市场，因为价格几乎是应用的限制因素。但要达到这一点，另一个目标是强制性的：生产具有稳定薄膜的亚毫米大小的气泡。然而，除了生产均匀泡沫外，主要目标是根据单一金属薄膜所获得的经验，描述和了解液态金属泡沫在颗粒和氧化层的作用下的稳定性。

In this project we want to develop a process to produce aluminium based foams via gas injection with a homogeneous pore size distribution. As many different factors play an important role such as temperature, alloy, type, number and form of particles as well as the oxide contents of the gas atmosphere, their influence will be studied systematically. These studies are described in the program in more detail. A further goal is to transfer the knowledge that single films can be stabilized with less or without particles to foams. If this will success, not only the processing and recycling will be improved, but the costs could be reduced, as ceramic particle reinforcement is expensive. This would help to push the market of metallic foams, as the price was almost the limiting factor for applications. But to reach this point, another goal is mandatory: the production of sub millimetre sized bubbles with stable films. Nevertheless, the main goal, beside the production of homogeneous foams, is to describe and understand the stability of liquid metal foams regarding the role of particles and oxide layer based on the experience won for single metallic films.