Nová Iva, Fraňa Karel, Solfronk Pavel, Sobotka Jiří, Koreček David, Švec Martin
Department of Technology, Faculty of Mechanical Engineering, Technical University of Liberec, Studentská 1402/2, 461 17 Liberec, Czech Republic.
Department of Power Engineering Equipment, Faculty of Mechanical Engineering, Technical University of Liberec, Studentská 1402/2, 461 17 Liberec, Czech Republic.
Materials (Basel). 2021 Aug 25;14(17):4809. doi: 10.3390/ma14174809.
The paper deals with research related to the production of metal cellular aluminium systems, in which production is based on the application of sodium chloride particles. In this paper, the properties of porous aluminium materials that were produced by an unconventional method-by pressing salt particles into the melt of aluminium alloy-are described. The new methodology was developed and verified for the production of these materials. The main feature of this methodology is a hydraulic forming press and a simple-shaped foundry mould. For these purposes, four different groups of sodium chloride particle sizes (1 to 3, 3 to 5, 5 to 7 and 8 to 10 mm) were applied. The preferred aluminium foundry alloy (AlSi12) was used to produce the porous aluminium samples. Based upon this developed methodology, samples of porous aluminium materials were produced and analysed. Their weight and volume were monitored, their density and relative density were calculated, and their porosity was determined. In addition, the porosity of samples and continuity of their air cells were monitored as well. An industrial computed tomograph and a scanning electron microscope were applied for these purposes.
本文涉及与金属泡沫铝体系生产相关的研究，其生产基于氯化钠颗粒的应用。本文描述了通过一种非常规方法——将盐颗粒压入铝合金熔体中——生产的多孔铝材料的性能。开发并验证了用于生产这些材料的新方法。该方法的主要特点是液压成型压力机和形状简单的铸造模具。为此，应用了四组不同粒径的氯化钠颗粒（1至3毫米、3至5毫米、5至7毫米和8至10毫米）。选用铸造铝合金（AlSi12）来制备多孔铝样品。基于这种开发的方法，制备并分析了多孔铝材料样品。监测了它们的重量和体积，计算了它们的密度和相对密度，并测定了它们的孔隙率。此外，还监测了样品的孔隙率及其气孔的连续性。为此使用了工业计算机断层扫描仪和扫描电子显微镜。
