板片状Al_2O_3晶粒三维形状的评估方法  

Evaluation of Three-dimensional Shape of Platelike Al_2O_3 Grains

作　　者：乔瑞庆[1] 肖丽[1] 

机构地区：[1]沈阳工业大学材料科学与工程学院,沈阳110023

出　　处：《无机材料学报》2007年第5期979-984,共6页Journal of Inorganic Materials

摘　　要：根据Al_2O_3的结晶习性设计了它的多面体颗粒几何模型,并利用随机切割系统对已知高径比的颗粒进行仿真切割,同时通过切出的颗粒截面计算截面的长宽比算术平均值,从而建立板片状氧化铝颗粒的高径比和其平均截面长宽比的对应关系.在实际应用中,可根据测量得到的板片状氧化铝陶瓷材料切面上晶粒截面的平均长径比来查询晶粒的三维参数高径比.The geometric model of A1203 grain is designed based on its crystal character, through randomly slicing the grain model with a given slenderness ratio with the emulation slicing system, the grain random section parameter-aspect ratio can be gotten. Then, the relationship between three-dimensional shape parameter of crystals and its two-dimensional section shape parameter can be established. In practical application, utilizing the relationship, three-dimensional shape of grains can be queried by measuring grains section parameter.

关 键 词：板片状氧化铝晶粒 几何模型 长宽比 高径比 

分 类 号：TB302[一般工业技术—材料科学与工程] TP391[自动化与计算机技术—计算机应用技术]