Zhang Yongmei, Li Qingshu, Yue Qidong, Wang Ping, Liu Zhenyu
College of Information Science and Engineering, Shanxi Agricultural University, Jinzhong, 030801, PR China.
College of Agricultural Engineering, Shanxi Agricultural University, Jinzhong, 030801, PR China.
Sci Rep. 2024 Jul 16;14(1):16433. doi: 10.1038/s41598-024-67051-4.
The orientation and shape of ceramics grains was always neglected, resulting in a lot of information during sintering has not been excavated. In this study, a modified phase-field model in order to express the anisotropy of grain boundary energy is developed. The effects of the anisotropy of grain boundary energy on the grain orientation and shape evolution are investigated in detail. The ferroelectric ceramic thick films are prepared by tape casting. The comparison of experiment and simulation results shows that the anisotropy of grain boundary energy results in uneven grain orientation and bimodal grain size distribution. The quantitative analysis of grain microstructures helps to establish a relationship with the degree of anisotropy of grain boundary energy. Our findings provide a new way to judge the degree of anisotropy by calculating the relevant parameters in the SEM images of ceramics materials.
陶瓷晶粒的取向和形状一直被忽视，导致烧结过程中的许多信息未被挖掘。在本研究中，开发了一种改进的相场模型以表达晶界能的各向异性。详细研究了晶界能各向异性对晶粒取向和形状演变的影响。通过流延法制备了铁电陶瓷厚膜。实验结果与模拟结果的比较表明，晶界能的各向异性导致晶粒取向不均匀和双峰晶粒尺寸分布。对晶粒微观结构的定量分析有助于建立与晶界能各向异性程度的关系。我们的研究结果提供了一种通过计算陶瓷材料扫描电子显微镜图像中的相关参数来判断各向异性程度的新方法。
