This study revealed that the mass ratio of large anisometric particles (platelets) to ultrafine, equiaxed particles strongly influences dynamic and quasistatic compressive response and the process of damage evolution in ice-templated alumina materials. The improved sinterability between particles of significantly dissimilar size and morphology enabled the utilization of a high mass ratio of the particles in harnessing a markedly enhanced level of strength in highly porous ice-templated ceramics. The high volume fraction of platelets increased lamellar bridge density and resulted in dendritic morphology as opposed to lamellar morphology without platelets. All the materials showed strain rate-sensitivity, where strength increased with strain rate. Materials with highly dendritic morphology exhibited the best performance in terms of maximum strength and energy absorption capacity, and the performance improved from quasistatic to dynamic regime. Direct observation of the process of damage evolution revealed the effects of both strain rate and ratio of platelets to ultrafine particles.

这项研究表明，大的等轴测颗粒（片状）与超细等轴颗粒的质量比会强烈影响以冰为模板的氧化铝材料的动态和准静态压缩响应以及损伤演化的过程。尺寸和形态明显不同的颗粒之间改善的烧结性使得能够利用高质量比的颗粒来利用高度多孔的以冰为模板的陶瓷中强度的显着提高。与没有血小板的层状形态相反，高体积分数的血小板增加了层状桥密度并导致树突形态。所有材料都显示出应变率敏感性，强度随应变率而增加。具有最大树突形态的材料在最大强度和能量吸收能力方面表现出最好的性能，并且性能从准静态提高到动态。直接观察损伤演变过程揭示了应变率和血小板与超细颗粒比率的影响。