Ice templating concepts based on tape cast processing technology are capable of creating continuous columnar‐graded pore structures using a wide variety of ceramic oxides with thicknesses from 100 µm up to 1 cm for applications including fuel cells, compositional grading templates, filtration/separation membranes, and catalyst supports. The merging of the tape casting process allows for the preparation of large area flexible green tapes as well as the long‐range alignment of the acicular ice crystals transverse to the cross‐section, yielding an additional degree of microstructure control beyond traditional freeze cast processing. Moreover, optimization of the freeze tape casting processing parameters has proven effective in tailoring porosity in aqueous cast ceramics. Magnetic resonance microscopy (MRM) combined with scanning electron microscopy (SEM) has revealed inherent microstructural anisotropy in the morphology of pores related to the direction of the cast tape. Due to the ability of MRM to image noninvasively with volume averaging over a range of slice thicknesses, the MRM images provide complementary information to the higher resolution single plane SEM images. Morphological variance as observed at different orientations through the cross‐sections of cast yttria stabilized zirconia is reported.

中文翻译：

---

用冰模板法研究流延铸造陶瓷的固有微观结构各向异性

基于流延铸造技术的冰模板概念能够使用厚度范围从100 µm到1 cm的多种陶瓷氧化物来创建连续的柱状渐变孔结构，其应用包括燃料电池，成分分级模板，过滤/分离膜，和催化剂载体。带式浇铸工艺的合并允许制备大面积的柔性生坯带，以及横向于横截面的针状冰晶的长距离排列，从而实现了比传统的冷冻浇铸工艺更高的微观结构控制程度。此外，已证明优化冷冻带铸造工艺参数可有效地调节水性铸造陶瓷中的孔隙率。磁共振显微镜（MRM）与扫描电子显微镜（SEM）的结合揭示了与铸带方向相关的孔的形态固有的微观结构各向异性。由于MRM具有无创成像能力，可以在一定范围的切片厚度范围内进行体积平均，因此MRM图像可为高分辨率的单平面SEM图像提供补充信息。据报道，通过铸态氧化钇稳定的氧化锆的横截面在不同方向观察到的形态变化。MRM图像为高分辨率的单平面SEM图像提供了补充信息。据报道，通过铸态氧化钇稳定的氧化锆的横截面在不同方向观察到的形态变化。MRM图像为高分辨率单平面SEM图像提供补充信息。据报道，通过铸态氧化钇稳定的氧化锆的横截面在不同方向观察到的形态变化。