【作者】 乔瑞庆； 肖丽；

【Author】 QIAO Ruiqing XIAO Li (School of Materials Science and Engineering,Shenyang University of Technology,Shenyang 110023)

【机构】 沈阳工业大学材料科学与工程学院；

【摘要】 根据 SrTiO₃陶瓷中晶粒以{100}和{111}晶面为主要晶界的结晶习性,以及晶粒形状随{100}和{111}占晶界面积不同而发生变化的特点,设计了适合 SrTiO₃晶粒形状特征的晶粒模型。通过对不同形状晶粒的仿真切割,可得到所对应形状晶粒的随机截面,以及能够反映晶粒形状变化的截面形状参数——圆形度。从而建立了晶粒截面圆形度与晶粒形状的关系。在实际应用时,通过测量统计 SrTiO₃陶瓷切片上晶粒截面圆形度的平均值, 来查询晶粒的三维形状。更多还原

【Abstract】 The grain model of SrTiO₃ was designed based on their crystal habit for{111}and{100}planes as its major grain boundary; the shape may be different with the change of the relative area of the two boundary planes.A grain’s random section and its shape parameters can be obtained by simulation using a slicing grain model in a simulation way.Through this method,the relationship be- tween the grain section circularity and its three-dimensional shape can be established.In practical application,utilizing this relation- ship,the three-dimensional shape of grains can be queried by measuring the mean value of the grain section circularity.更多还原