The so-called Freeze Foaming method aims at manufacturing ceramic cellular scaffolds for diverse applications. One application is dedicated to potential bone replacement material featuring open, micro and interconnected porosity. However, the main challenges of this foaming method is to achieve a homogeneous pore morphology. In a current project, the authors throw light on the bubble/pore and strut formation of this process by in situ computed tomography. This allows for evaluating varying process parameter’s effects on the growth of the ceramic foam during the foaming process. As first result and basis for CT analysis, a stable and reproducible model suspension was developed which resulted in reproducible foam structures. In dependence of selected process parameters like pressure reduction rate or air content in the ceramic suspension resulting Freeze Foams became adjustable with regard to their pore morphology. Pore size and distribution data as well as the porosity were characterized and evaluated accordingly.

所谓的冻结发泡方法旨在制造用于多种应用的陶瓷多孔支架。一种应用致力于具有开放，微观和相互连接的孔隙度的潜在骨替代材料。然而，这种发泡方法的主要挑战是实现均匀的孔形态。在当前的项目中，作者通过原位观察了该过程的气泡/孔和支杆形成情况CT检查。这允许评估在发泡过程中变化的工艺参数对陶瓷泡沫生长的影响。作为CT分析的第一个结果和基础，开发了稳定且可重现的模型悬浮液，可产生可重现的泡沫结构。根据所选择的工艺参数，例如减压速率或陶瓷悬浮液中的空气含量，所得的冷冻泡沫就其孔的形态而言可调节。对孔的大小和分布数据以及孔隙度进行了表征和评估。