摘要
为了研究复相陶瓷材料烧结致密化过程,以晶界能和晶界曲率生长驱动力理论为基础,建立了含有气孔的复相陶瓷材料元胞自动机模型,在含有气孔和未含气孔情况下,对陶瓷材料烧结过程进行了模拟,研究了其烧结致密化过程,并与制备的相同体积含量Al2O3/Ti N陶瓷材料进行对比。结果表明,模型可有效模拟复相陶瓷材料烧结时晶粒的生长及气孔湮灭,能较好地再现烧结致密化过程,模拟结果与制备的陶瓷材料微观形貌组织十分接近,为陶瓷材料设计及烧结工艺优化奠定了基础。
In order to study the sintering densification process of composite ceramic materials,a cellular automata model of composite ceramic materials containing pores was established based on grain boundary energy theory and grain growth boundary curvature driving force theory. The sintering densification process of Al2O3/TiN ceramics was simulated,and was compared with that of experiment for Al2O3/TiN ceramic material in same volume content and sintering condition. The results show that this model can simulate the grain growth process and pores annihilation process of composite ceramic materials,and it can be used to reproduce the sintering densification process. The simulation results are very close to the sintered Al2O3/TiN ceramic material microstructure.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2015年第9期219-225,共7页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金(51405513)
青岛市科技发展计划项目(14-2-4-75-jch)
关键词
陶瓷材料
元胞自动机
烧结致密化
ceramic material
cellular automata
sintering densification process
